EP0762354B1 - Längsgestreckter Körper als Sicherungsetikett für elektromagnetische Diebstahlsicherungssysteme - Google Patents
Längsgestreckter Körper als Sicherungsetikett für elektromagnetische Diebstahlsicherungssysteme Download PDFInfo
- Publication number
- EP0762354B1 EP0762354B1 EP96113005A EP96113005A EP0762354B1 EP 0762354 B1 EP0762354 B1 EP 0762354B1 EP 96113005 A EP96113005 A EP 96113005A EP 96113005 A EP96113005 A EP 96113005A EP 0762354 B1 EP0762354 B1 EP 0762354B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- elongated body
- body according
- amorphous
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2408—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using ferromagnetic tags
- G08B13/2411—Tag deactivation
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2428—Tag details
- G08B13/2437—Tag layered structure, processes for making layered tags
- G08B13/244—Tag manufacturing, e.g. continuous manufacturing processes
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2428—Tag details
- G08B13/2437—Tag layered structure, processes for making layered tags
- G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15391—Elongated structures, e.g. wires
Definitions
- the invention relates to an elongated body for electromagnetic anti-theft or identification systems with a strip of amorphous material, that with magnetic reversal in an interrogation zone with a magnetic alternating field due to Barkhausen jumps Reaching certain threshold values of the magnetic field suddenly magnetized and thereby in a query coil triggers characteristic voltage pulses.
- DE-A 29 33 337 is already a ferromagnetic wire known that contains two strained against each other and that in an alternating field when exceeding or falling below sudden reversal of certain threshold values experienced through a Barkhaus jump. Under This wire can also be used as a security strip for alarm systems be used. Due to the Barkhausensprung there is a characteristic signal that for example by evaluating harmonics in one Interrogation coil can be recognized and with signals other magnetic parts cannot be confused.
- this known ferromagnetic wire requires relatively high field strengths, for example to produce them in a query zone at the exit of a store relative high alternating fields are necessary. But here you are endeavors to apply fields as low as possible in order to to be able to make the query zone sufficiently wide and on the other hand, health risks for the query zone keep people passing through as low as possible.
- Strips for anti-theft or identification systems can be used and with low amplitude an interrogating alternating field.
- the hard magnetic Component of this composite body with impulse behavior can be used to deactivate the theft deterrent strip by magnetization and thus Saturation of the soft magnetic part.
- the Deactivated strips can then be triggered without an alarm are transported through the query zone.
- the present invention now solves the problem Strips for anti-theft or identification systems to provide that with low panel strengths a defined impulse behavior sudden magnetic reversal due to cracks in Barkhausen has and is inexpensive to produce and also at relative short stripes a sufficiently high, characteristic Signal generated.
- the solution is to use a strip made of an amorphous material with a cobalt content of there is at least 20 at% and its property to pulsed magnetic reversal through heat treatment for setting the magnetic anisotropy when current is flowing Receives strips, and that the current through the Stripes related to the temperature and duration of treatment the heat treatment is adjusted so that there is a ratio of remanence induction to saturation induction between 0.2 and 0.9 results.
- a heat-treated according to the invention amorphous strip made of an alloy Cobalt base, especially if certain values are observed from remanence induction to saturation induction in particular high pulse voltages in the interrogation coil that triggers through the periodic magnetic reversal of the strip and the resulting jumps in the Barkhaus.
- the use of such amorphous stripes relatively short anti-theft stripes (less than 50 mm) and still high enough Impulse voltages result, which in turn are characteristic Trigger evaluable harmonics in the interrogation coil.
- the behavior of the invention can be improved Stripes if you take the stripe not just from the amorphous Produces tape, but the stripe from this amorphous Tape and an associated soft magnetic material, that magnetizes continuously, exists.
- one can with the invention Streak through an associated permanent magnet also achieve that an asymmetrical signal, a sudden magnetic reversal with different ones Threshold values of the magnetic field, depending on the direction of magnetization, is triggered. This is for pulse wires explained in more detail in EP-B 156 016.
- alloys of the composition in at.% Are: 1) Co 74.5 Fe 1.5 Mn 4 Si 11 B 9 and 2) Co 72 Fe 1.1 Mo 1 Mn 4.2 Si 13.2 B 8.5 suitable for use as anti-theft strips according to the invention.
- an amorphous band from the alloy composition mentioned under 1) has been used.
- the ratio of the remanence induction Jr to the saturation induction Js was measured on 150 mm long strips in order to exclude the influence of the demagnetizing effect.
- FIG. 1 shows an example of a heat treatment according to provided the invention.
- a supply spool 1 with the Amorphous tape is fed through a tensor roller 2 a first pair of rollers 3, which with a line 4 a power source 5 is connected.
- the amorphous band 6 After going through the the first pair of rollers, the amorphous band 6 enters one Oven 7, in which it is electrically shielded by a shielding tube 8 is surrounded by conductive or magnetically soft material in order keep external field influences away.
- a coil 9 which is connected to a voltage source 10 and a generated on the amorphous band 6 longitudinal field.
- the serve first pair of rollers 3 and a second pair of rollers 11 not only the supply of the current from the current source 5, but can also do so by using the appropriate drive used a certain tension in the adjust amorphous band 6.
- a shield against external ones To omit fields completely or partially and for example to use the existing earth field as a longitudinal field. At certain materials, it may also be sufficient if only the circular during the heat treatment, through which Current flow generated field acts on the tape or the wire from which the strips are then made. In particular for alloys with positive magnetostriction the effect caused by the longitudinal field also by a Tension of the belt during the heat treatment produce. Of course you can also do one at the same time Use longitudinal field and tension.
- an amorphous band are for identification purposes tapes reacting differently from goods or Arrange wires in a strip or there are several To connect strips with the identified goods.
- the shape of the magnetization curve for example by the remanence ratio, defined by the quotient from remanent induction Jr to saturation induction Js (each measured in Tesla). It has surprisingly found that neither flat Grind rectangular loops with accordingly higher remanence ratio for the pulse formation in this Application are advantageous.
- the optimum of Impulse height to a small extent also from that used Material and dimensions of the strip depends on the parameters for heat treatment (longitudinal field, current by the belt and belt tension) so that a remanence ratio between 0.2 and 0.9, preferably between 0.3 and 0.7.
- the peak voltage of the pulse at the amorphous band according to the invention at a higher field strength occurs, but a much higher one Voltage pulse and a steep edge when the Tension results.
- the measurements show that the voltage pulse in the amorphous band according to the invention about 120 mV is a maximum while with the amorphous wire Voltage amplitude of 30 mV was achievable.
- Particularly advantageous alloys for the intended application result when a cobalt content between 60 and 85 at .-% is provided and when the iron / manganese content, which determines the magnetostriction constant, is in the range from 1 to 10 at .-% is chosen so that the lowest possible magnetostriction, preferably less than ⁇ 4 x 10 -6 results.
- X denotes either one or more of the transition metals of groups IIIB-VIB such as. B. Nd, Mo, Ta, W, V etc. and / or one or more elements of the main groups IIIA-VA, such as. B. C, P, Ge.
- Permanent magnets not only allow the response field strength to be reduced change depending on the magnetic reversal direction, but it is - as with known soft magnetic Stripes - also possible due to a slightly stronger one Permanent magnets to saturate the strip and so the impulse behavior turn off. This can be a deactivable Security strips can be obtained.
- Advantageous dimensions for the amorphous tape that in the strips according to the invention either alone or together is included with other materials a length up to 100 mm if a width up to 5 mm and a thickness of max. 50 ⁇ m for the tape or the diameter of the wire is provided. But they are also shorter Stripes possible with sufficient pulse height.
- the advantageous dimensions are up to a length 60 mm in that you have a width up to 3 mm and a Tape thickness up to 40 ⁇ m is used.
- Strips with lengths can also be made with these dimensions Manufacture under 40 mm.
- the Signal level can be increased by using tempered bands for short stripe lengths, that is for stripe lengths between 20 and 40mm, at the ends of longitudinal strips from one soft magnetic material can be arranged. This will an increase in the signal level up to a factor of 10 is achieved. In the case of untempered bands, the signal level becomes approximately that Increased 1 to 2 times.
- the distance between the strips should not be less than 10mm.
- the maximum pulse height, that is the optimal one The position depends on the length of the strip amorphous band and the dimensions of the soft magnetic Strips off.
- a good direct contact between the amorphous bands and the soft magnetic stripe is essential, with a External pressure with an adhesive strip is sufficient.
- a significant signal boost is also achieved by two soft magnetic strips on each Ends of the amorphous band arranged above and below become.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- General Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Burglar Alarm Systems (AREA)
- Soft Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Description
a = 20-85; b = 0-50; c = 0-15 und d = 15-30,
wobei a + b + d + c einschließlich üblicher Verunreinigungen gleich 100 und X eines oder mehrere der Übergangsmetalle der Gruppen IIIB-VIB, insbesondere Nb, Mo, Ta, W, V, und/oder eines oder mehrere Elemente der Hauptgruppen IIIA-VA, insbesondere C, P, Ge bezeichnet. Insbesondere sind Legierungen der Zusammensetzung in at.%:
1) Co74.5Fe1.5Mn4Si11B9 und 2) Co72Fe1.1Mo1Mn4.2Si13.2B8.5
für die Verwendung als Diebstahlsicherungsstreifen nach der Erfindung geeignet.
Ergebnis | Verfahrensparameter | HLF{(A/cm} | Zugspannung {MPa} | |||
U{mV} | Jr/Js | T{°C} | t{s} | I{mA} | ||
31 | 0,41 | 300 | 25 | 450 | 0,5 | 45 |
20 | 0,58 | 300 | 25 | 200 | 0,5 | 45 |
4 | 0,14 | 300 | 25 | 525 | 0,5 | 45 |
12 | 0,65 | 300 | 25 | 450 | 5 | 45 |
a = 20 - 85; b = 0 - 50; c = 0 - 15 und d = 15 - 30, wobei a + b + d + c = 100 ist. Dabei bezeichnet X entweder eines oder mehrere der Übergangsmetalle der Gruppen IIIB-VIB wie z. B. Nd, Mo, Ta, W, V etc. und/oder eines oder mehrere Elemente der Hauptgruppen IIIA-VA, wie z. B. C, P, Ge.
Claims (24)
- Längsgestreckter Körper für elektromagnetische Diebstahlsicherungs- oder Identifikationssysteme mit einem Streifen aus amorphem Material, der bei Ummagnetisierung in einer Abfragezone mit einem magnetischen Wechselfeld durch Barkhausensprünge bei Erreichen bestimmter Schwellwerte des Magnetfeldes plötzlich ummagnetisiert wird und dadurch in einer Abfragespule charakteristische Spannungsimpulse auslöst, dadurch gekennzeichnet , daß ein Streifen verwendet wird, der aus einem amorphen Material mit einem Kobalt-Anteil von mindestens 20 at-% besteht und seine Eigenschaft zur impulsförmigen Ummagnetisierung durch eine Wärmebehandlung zur Einstellung der magnetischen Anisotropie bei stromdurchflossenem Streifen erhält, und daß der Strom durch den Streifen in Verbindung mit der Temperatur und der Behandlungsdauer der Wärmebehandlung so eingestellt wird, daß sich ein Verhältnis von Remanenzinduktion zu Sättigungsinduktion zwischen 0,2 und 0,9 ergibt.
- Verfahren zur Herstellung eines Streifens nach Anspruch 1, dadurch gekennzeichnet , daß ein durch Rascherstarrung hergestelltes, amorphes Band (6) in einem Ofen (7) mit Längsfeld bei in Längsrichtung durch das Band (6) fließendem Strom wärmebehandelt wird.
- Verfahren zur Herstellung eines Streifens nach Anspruch 1, dadurch gekennzeichnet , daß ein durch Rascherstarrung hergestelltes, amorphes Band (6) in einem Ofen (7) unter Zugspannung bei in Längsrichtung durch das Band (6) fließendem Strom wärmebehandelt wird.
- Verfahren nach Anspruch 2 bis 3, dadurch gekennzeichnet , daß das Band erst nach der Wärmebehandlung in einzelne Streifen geschnitten wird.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet, daß ein Streifen verwendet wird, dessen Verhältnis von Remanenzinduktion zu Sättigungsinduktion im Bereich von 0.3 bis 0.7 liegt.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet, daß das Material für den Streifen aus einer Legierung besteht, die der Formel CoaNib(Fe,Mn)c(Si,B,X)d genügt, wobei in at-%:
a = 20-85; b = 0-50; c = 0-15 und d = 15-30, wobei a + b + d + c einschließlich üblicher Verunreinigungen gleich 100 und X eines oder mehrere der Übergangsmetalle der Gruppen IIIB-VIB, insbesondere Nb, Mo, Ta, W, V und/oder eines oder mehrere Elemente der Hauptgruppen IIIA-VA, insbesondere C, P, Ge bezeichnet. - Längsgestreckter Körper nach Anspruch 6, dadurch gekennzeichnet, daß der Kobalt-Anteil der für den Streifen verwendeten Legierung größer als 40 at-% ist.
- Längsgestreckter Körper nach Anspruch 6, dadurch gekennzeichnet, daß der Kobalt-Anteil der für den Streifen verwendeten Legierung größer als 60 at-% ist.
- Längsgestreckter Körper nach Anspruch 6, dadurch gekennzeichnet, daß in der Legierung für den Streifen Eisen und/oder Mangan im Bereich von 1 bis 10 at-% enthalten ist.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet, daß er aus einem ersten Streifen aus amorphem Material mit impulsförmigem Ummagnetisierungsverhalten und einem oder mehreren zweiten weichmagnetischen Streifen, deren Magnetisierungsrichtung sich bei Ummagnetisierung kontinuierlich umkehrt, besteht.
- Längsgestreckter Körper nach Anspruch 10, dadurch gekennzeichnet, daß zur Erhöhung der Impulshöhe für den/die zweiten Streifen ein weichmagnetisches Material verwendet wird, dessen Koerzitivfeldstärke unterhalb von 30 mA/cm liegt und daß der Querschnitt multipliziert mit der Sättigungsinduktion höher ist als der Remanenzfluß des ersten Streifens mit Impulsverhalten.
- Längsgestreckter Körper nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß die Länge des/r zweiten weichmagnetischen Streifen(s) größer als diejenige des ersten Streifens mit Impulsverhalten ist und daß der/die zweiten weichmagnetische(n) Streifen so angeordnet ist/sind, daß er den ersten Streifen mit Impulsverhalten an beiden Enden überragt.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet, daß er aus einem oder mehreren Streifen besteht, die aus Legierungen mit einer Magnetostriktion unter ± 4 x 10 bestehen, so daß das Ummagnetisierungsverhalten bestehen bleibt, wenn er mechanischen Spannungen ausgesetzt wird.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet, daß er einen amorphen Streifen mit Impulsverhalten enthält, der aus einer Legierung mit einer positiven Magnetostriktion besteht.
- Längsgestreckter Körper nach Anspruch 1,
dadurch gekennzeichnet,
daß er aus einem amorphen Streifen mit impulsförmigem Ummagnetisierungsverhalten und einem mit dem Streifen verbundenen hartmagnetischen Körper zur Vormagnetisierung besteht, dessen Magnetfeld so dimensioniert ist, daß sich abhängig von der Magnetisierungsrichtung des Streifens durch das Wechselfeld in der Abfragezone unterschiedliche Schwellwerte für die impulsförmige Ummagnetisierung einstellen. - Längsgestreckter Körper nach Anspruch 1, 10 oder 15, dadurch gekennzeichnet, daß er zusätzlich mindestens einen Dauermagneten enthält, der im aufmagnetisierten Zustand eine Deaktivierung durch Sättigung des amorphen Bandstückes bewirkt.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet, daß der verwendete amorphe Streifen eine Länge von bis zu 100 mm, eine Breite < 5 mm und eine Dicke mit maximal 50 µm besitzt.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet , daß der verwendete amorphe Streifen eine Länge bis zu 60 mm, eine Breite bis zu 3 mm und eine Banddicke bis höchstens 40 µm aufweist.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet , daß der verwendete amorphe Streifen eine Länge bis zu 40 mm, eine Breite bis 3 mm und eine Banddicke bis zu 40 µm aufweist.
- Längsgestreckter Körper nach Anspruch 17, dadurch gekennzeichnet , daß die Schaltfeldstärke unter 0,75 A/cm liegt.
- Längsgestreckter Körper nach Anspruch 18, dadurch gekennzeichnet , daß die Schaltfeldstärke unter 1,0 A/cm liegt.
- Längsgestreckter Körper nach Anspruch 19, dadurch gekennzeichnet , daß die Schaltfeldstärke unter 1,5 A/cm beträgt.
- Längsgestreckter Körper nach Anspruch 1, dadurch gekennzeichnet , daß als amorpher Streifen ein Draht mit rundem oder elliptischem Querschnitt verwendet wird.
- Verfahren zur Herstellung eines Streifens für einen längsgestreckten Körper nach Anspruch 1, dadurch gekennzeichnet , daß der Strom durch den Streifen bei der Wärmebehandlung im Verhältnis zum einwirkenden Längsfeld so eingestellt wird, daß das Verhältnis von maximalem Querfeld zu Längsfeld im Bereich von 1 bis 10 liegt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19533362A DE19533362A1 (de) | 1995-09-09 | 1995-09-09 | Längsgestreckter Körper als Sicherungsetikett für elektromagnetische Diebstahlsicherungssysteme |
DE19533362 | 1995-09-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0762354A1 EP0762354A1 (de) | 1997-03-12 |
EP0762354B1 true EP0762354B1 (de) | 2000-11-15 |
Family
ID=7771697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96113005A Expired - Lifetime EP0762354B1 (de) | 1995-09-09 | 1996-08-13 | Längsgestreckter Körper als Sicherungsetikett für elektromagnetische Diebstahlsicherungssysteme |
Country Status (6)
Country | Link |
---|---|
US (1) | US5757272A (de) |
EP (1) | EP0762354B1 (de) |
JP (1) | JPH09148117A (de) |
DE (2) | DE19533362A1 (de) |
DK (1) | DK0762354T3 (de) |
ES (1) | ES2152463T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107949261A (zh) * | 2017-11-15 | 2018-04-20 | 中国科学院宁波材料技术与工程研究所 | 一种电磁波吸收材料及其制备方法 |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2216897A1 (en) * | 1996-09-30 | 1998-03-30 | Unitika Ltd. | Fe group-based amorphous alloy ribbon and magnetic marker |
DE19653428C1 (de) * | 1996-12-20 | 1998-03-26 | Vacuumschmelze Gmbh | Verfahren zum Herstellen von Bandkernbändern sowie induktives Bauelement mit Bandkern |
US7979173B2 (en) * | 1997-10-22 | 2011-07-12 | Intelligent Technologies International, Inc. | Autonomous vehicle travel control systems and methods |
DE19815583A1 (de) * | 1998-04-08 | 1999-10-14 | Meto International Gmbh | Element für die elektronische Artikelsicherung oder für die Sensortechnik |
US6254695B1 (en) * | 1998-08-13 | 2001-07-03 | Vacuumschmelze Gmbh | Method employing tension control and lower-cost alloy composition annealing amorphous alloys with shorter annealing time |
DE19918589A1 (de) * | 1999-04-23 | 2000-10-26 | Vacuumschmelze Gmbh | Magnetischer Markierstreifen und Verfahren zur Herstellung eines magnetischen Markierstreifens |
JP4128721B2 (ja) * | 2000-03-17 | 2008-07-30 | 株式会社東芝 | 情報記録物品 |
GB2374084A (en) * | 2001-04-03 | 2002-10-09 | Fourwinds Group Inc | Alloys having bistable magnetic behaviour |
US6830634B2 (en) * | 2002-06-11 | 2004-12-14 | Sensormatic Electronics Corporation | Method and device for continuous annealing metallic ribbons with improved process efficiency |
ES2238913B1 (es) * | 2003-10-09 | 2006-11-01 | Micromag 2000, S.L. | Microhilo amorfo y metodo para su fabricacion. |
EP1724708B1 (de) * | 2005-04-26 | 2016-02-24 | Amotech Co., Ltd. | Magnetisches Blech für RFID-Antenne und ihr Herstellungsverfahren |
JP2009543025A (ja) * | 2006-05-09 | 2009-12-03 | サーマル ソリューションズ アイエヌシー. | 磁気素子温度センサ |
US7771545B2 (en) * | 2007-04-12 | 2010-08-10 | General Electric Company | Amorphous metal alloy having high tensile strength and electrical resistivity |
KR101419262B1 (ko) * | 2008-04-18 | 2014-07-16 | 메트글라스, 인코포레이티드 | 온도 센서와 그에 따른 원격 온도 센싱 방법 |
WO2009145746A1 (en) * | 2008-04-18 | 2009-12-03 | Metglas, Inc. | Remote temperature sensing device and related remote temperature sensing method |
CN104882239B (zh) * | 2015-06-03 | 2017-12-05 | 山东大学 | 一种使Fe78Si9B13非晶饱和磁化强度提高和矫顽力降低的方法 |
CN108072777A (zh) * | 2016-11-15 | 2018-05-25 | 刘伟华 | 防窃电装置 |
US20200029396A1 (en) * | 2018-06-12 | 2020-01-23 | Carnegie Mellon University | Thermal processing techniques for metallic materials |
CN112008053B (zh) * | 2020-08-27 | 2021-09-17 | 燕山大学 | 一种合金的制备装置及电流施加方法 |
CN116313357B (zh) * | 2023-05-11 | 2023-07-28 | 广汽埃安新能源汽车股份有限公司 | 一种非晶纳米晶软磁合金、制备方法及应用 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3802854A (en) * | 1973-03-19 | 1974-04-09 | Akad Wissenschaften Ddr | Process for forming magnetic metal deposits on a flexible base for use as information data carrier product thereof |
US4298862A (en) * | 1979-04-23 | 1981-11-03 | Allied Chemical Corporation | Amorphous antipilferage marker |
DE2933337A1 (de) * | 1979-08-17 | 1981-03-26 | Robert Bosch Gmbh, 70469 Stuttgart | Geber zur erzeugung von elektrischen impulsen durch spruenge in der magnetischen polarisation sowie verfahren zur herstellung desselben |
JPS58213857A (ja) * | 1982-06-04 | 1983-12-12 | Takeshi Masumoto | 疲労特性に優れた非晶質鉄基合金 |
JPS614203A (ja) * | 1984-06-19 | 1986-01-10 | Hitachi Metals Ltd | Co基アモルフアス磁心およびその熱処理方法 |
US4660025A (en) * | 1984-11-26 | 1987-04-21 | Sensormatic Electronics Corporation | Article surveillance magnetic marker having an hysteresis loop with large Barkhausen discontinuities |
US4823113A (en) * | 1986-02-27 | 1989-04-18 | Allied-Signal Inc. | Glassy alloy identification marker |
WO1988003699A1 (en) * | 1986-11-03 | 1988-05-19 | Allied Corporation | Near-zero magnetostrictive glassy metal alloys for high frequency applications |
JPS63240003A (ja) * | 1987-03-27 | 1988-10-05 | Kaneo Mori | 非晶質金属細線及びその製造方法 |
DE3729418A1 (de) * | 1987-09-03 | 1989-03-16 | Vacuumschmelze Gmbh | Spulenkern fuer eine induktive, frequenzunabhaengige schaltvorrichtung |
DE3824075A1 (de) * | 1988-07-15 | 1990-01-18 | Vacuumschmelze Gmbh | Verbundkoerper zur erzeugung von spannungsimpulsen |
US5568125A (en) * | 1994-06-30 | 1996-10-22 | Sensormatic Electronics Corporation | Two-stage annealing process for amorphous ribbon used in an EAS marker |
-
1995
- 1995-09-09 DE DE19533362A patent/DE19533362A1/de not_active Withdrawn
-
1996
- 1996-08-13 ES ES96113005T patent/ES2152463T3/es not_active Expired - Lifetime
- 1996-08-13 DE DE59606138T patent/DE59606138D1/de not_active Expired - Lifetime
- 1996-08-13 EP EP96113005A patent/EP0762354B1/de not_active Expired - Lifetime
- 1996-08-13 DK DK96113005T patent/DK0762354T3/da active
- 1996-09-04 JP JP8252210A patent/JPH09148117A/ja active Pending
- 1996-09-09 US US08/711,089 patent/US5757272A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107949261A (zh) * | 2017-11-15 | 2018-04-20 | 中国科学院宁波材料技术与工程研究所 | 一种电磁波吸收材料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
ES2152463T3 (es) | 2001-02-01 |
US5757272A (en) | 1998-05-26 |
DE19533362A1 (de) | 1997-03-13 |
DE59606138D1 (de) | 2000-12-21 |
DK0762354T3 (da) | 2001-02-05 |
EP0762354A1 (de) | 1997-03-12 |
JPH09148117A (ja) | 1997-06-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0762354B1 (de) | Längsgestreckter Körper als Sicherungsetikett für elektromagnetische Diebstahlsicherungssysteme | |
DE3509160C2 (de) | Markierungselement für ein System zur Überwachung von Gegenständen | |
DE69835961T4 (de) | Verfahren zum glühen von amorphen bändern und etikett für elektronisches überwachungssystem | |
DE69732117T2 (de) | Magnetomechanisches elektronisches Warenüberwachungsetikett mit niedriger körzivität magnetisch polarisiertem Element | |
DE69324300T2 (de) | Deaktivierbares/reaktivierbares magnetisches Etikett mit einem Stufenwechsel in magnetischem Fluss | |
DE3541536C2 (de) | ||
DE69710150T2 (de) | Auf Fe basierte amorphe Legierungsband und magnetische Markierung | |
EP0226812B1 (de) | Deaktivierbares Sicherungsetikett für Diebstahlsicherungssysteme | |
DE69903652T2 (de) | Verfahren zum glühen amorpher legierungen und verfahren zum herstellen eines markierungselements | |
DE3229334A1 (de) | Anzeigeeinrichtung fuer ein magnetisches diebstahlermittlungssystem | |
DE69208882T2 (de) | Verfahren zur Veränderung der Resonanzcharakteristik eines Legierungsmetallstreifens und Verwendung eines solchen Streifens als Marker | |
DE3824075C2 (de) | ||
DE19545755A1 (de) | Verwendung einer amorphen Legierung für magnetoelastisch anregbare Etiketten in auf mechanischer Resonanz basierenden Überwachungssystemen | |
DE19740908C1 (de) | Anzeigeelement für die Verwendung in einem magnetischen Diebstahlsicherungssystem und Verfahren zur Herstellung eines Aktivierungsstreifens hierfür | |
EP0446638A1 (de) | Deaktivierbarer Diebstahlsicherungsstreifen | |
EP0789340B1 (de) | Sicherungselement für die elektronische Artikelsicherung | |
DE69830477T2 (de) | Magnetostriktives element mit optimierter polarisationsfeldabhängiger resonanzfrequenzcharakteristik | |
EP1047032B1 (de) | Magnetischer Markierstreifen und Verfahren zur Herstellung eines magnetischen Markierstreifens | |
EP0949598A2 (de) | Element für die elektronische Artikelsicherung | |
DE2920084A1 (de) | Impulsgeber fuer die abfrage durch ummagnetisierung | |
DE69837528T2 (de) | Magnetisches etikett | |
DE60007781T2 (de) | Deaktivierungselement für magnetische überwachungsmarker und herstellungsverfahren | |
DE2839046C2 (de) | ||
DE60123756T2 (de) | Magnetischer markierer und seine herstellung | |
EP2643839B1 (de) | Weichmagnetisches metallband für elektromechanische bauelemente |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE DK ES FR GB IE IT NL SE |
|
17P | Request for examination filed |
Effective date: 19970404 |
|
17Q | First examination report despatched |
Effective date: 19991004 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE DK ES FR GB IE IT NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20001115 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 20001115 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20001115 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 59606138 Country of ref document: DE Date of ref document: 20001221 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2152463 Country of ref document: ES Kind code of ref document: T3 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20010215 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20001115 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20050819 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20050825 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20050829 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20060824 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20080430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070813 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070831 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20070814 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070814 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20140924 Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59606138 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160301 |