EP0762354B1 - Corps allongés comme étiquette de sécurité pour des systèmes électromagnétiques antivol - Google Patents

Corps allongés comme étiquette de sécurité pour des systèmes électromagnétiques antivol Download PDF

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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
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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
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EP96113005A
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German (de)
English (en)
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EP0762354A1 (fr
Inventor
Giselher Dr. Herzer
Gerd Rauscher
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Vacuumschmelze GmbH and Co KG
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Vacuumschmelze GmbH and Co KG
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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.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Burglar Alarm Systems (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Claims (24)

  1. Elément oblong pour des systèmes électromagnétiques d'antivol ou d'identification, comportant une bande en matériau amorphe dont l'aimantation, en cas d'inversion magnétique dans une zone de lecture par un champ alternatif magnétique en raison de saut de Barkhausen, est inversée de manière soudaine lorsque des valeurs-seuil déterminées du champ magnétique sont atteintes et qui déclenche ainsi dans une bobine d'interrogation des impulsions de tension caractéristiques, caractérisé en ce que l'on utilise une bande qui est constituée d'un matériau amorphe à teneur en cobalt d'au moins 20 % en atome et qui reçoit sa propriété en vue de l'inversion magnétique en forme d'impulsion par un traitement thermique pour régler l'anisotropie magnétique dans une bande dans laquelle passe du courant, et en ce que le courant est réglé par la bande en liaison avec la température et la durée du traitement thermique de manière à obtenir un rapport de l'induction résiduelle à l'induction de saturation compris entre 0,2 et 0,9.
  2. Procédé pour produire une bande suivant la revendication 1, caractérisé en ce que l'on fait subir un traitement thermique à une bande (6) amorphe, produite par solidification rapide, dans un four (7) par un champ longitudinal, pour du courant passant dans la bande (6) dans la direction longitudinale.
  3. Procédé pour produire une bande suivant la revendication 1, caractérisé en ce que l'on fait subir un traitement thermique à une bande (6) amorphe, produite par solidification rapide, dans un four (7), sous tension de traction, pour un courant passant dans la bande (6) dans la direction longitudinale.
  4. Procédé suivant les revendications 2 à 3, caractérisé en ce que l'on ne découpe la bande en rubans individuels qu'après le traitement thermique.
  5. Elément oblong suivant la revendication 1, caractérisé en ce que l'on utilise un ruban dont le rapport de l'induction résiduelle à l'induction de saturation est dans l'intervalle de 0,3 à 0,7.
  6. Elément oblong suivant la revendication 1, caractérisé en ce que le matériau pour le ruban est en un alliage qui satisfait à la formule CoaNib(Fe, Mn)c(Si, B, X)d, avec en pourcentages en atome :
       a = 20 à 85 ; b = 0 à 50 ; c = 0 à15 et d = 15 à 30, a + b + d + c étant égal à 100, impuretés usuelles incluses et X étant l'un ou plusieurs des métaux de transition des groupes IIIB-VIB, notamment Nb, Mo, Ta, W, V et/ou un ou plusieurs des éléments des groupes principaux IIIA-VA, notamment C, P, Ge.
  7. Elément oblong suivant la revendication 6, caractérisé en ce que la teneur en cobalt de l'alliage utilisé pour le ruban est supérieur à 40 % en atome.
  8. Elément oblong suivant la revendication 6, caractérisé en ce que la teneur en cobalt de l'alliage utilisé pour le ruban est supérieure à 60 % en atome.
  9. Elément oblong suivant la revendication 6, caractérisé en ce qu'il est contenu dans l'alliage pour le ruban du fer et/ou du manganèse dans un intervalle de 1 à 10 % en atome.
  10. Elément oblong suivant la revendication 1, caractérisé en ce qu'il est constitué d'un premier ruban en matériau amorphe à comportement d'inversion magnétique en forme d'impulsion et d'un ou plusieurs deuxièmes rubans magnétiques mous dont la direction d'aimantation s'inverse de manière continue en cas d'inversion magnétique.
  11. Elément oblong suivant la revendication 10, caractérisé en ce que, pour augmenter le niveau d'impulsion, on utilise un premier matériau magnétique mou dont l'intensité de champ coercitif est inférieur à 30 mA/cm et en ce que la section transversale multipliée par l'induction de saturation est supérieure au flux résiduel du premier ruban à comportement d'impulsion.
  12. Elément oblong suivant la revendication 10 ou 11, caractérisé en que la longueur du deuxième ou des deuxièmes rubans magnétiques mous est supérieure à celle du premier ruban à comportement d'impulsion et en ce que le premier ou les premiers rubans magnétiques mous sont disposés de telle manière qu'ils font saillie aux deux extrémités du premier ruban à comportement d'impulsion.
  13. Elément oblong suivant la revendication 1, caractérisé en ce qu'il est constitué d'un ou de plusieurs rubans qui sont en des alliages ayant une magnétostriction inférieure à ± 4 x 10-6, si bien que le comportement en inversion magnétique subsiste s'il est soumis à des tensions mécaniques.
  14. Elément oblong suivant la revendication 1, caractérisé en ce qu'il contient un ruban amorphe à comportement d'impulsion qui est en un alliage ayant une magnétostriction positive.
  15. Elément oblong suivant la revendication 1, caractérisé en ce qu'il est constitué d'un ruban amorphe à comportement en inversion magnétique en forme d'impulsion et d'un élément magnétique dur relié au ruban, pour la polarisation, dont le champ magnétique est dimensionné de telle manière qu'il s'établit en fonction de la direction d'aimantation du ruban, par le champ alternatif, différentes valeurs-seuil dans la zone de lecture pour l'inversion magnétique en forme d'impulsion.
  16. Elément oblong suivant la revendication 1, 10 ou 15, caractérisé en ce qu'il contient de plus au moins un aimant permanent qui provoque à l'état réaimanté une désactivation par saturation du tronçon de bande amorphe.
  17. Elément oblong suivant la revendication 1, caractérisé en ce que le ruban amorphe utilisé a une longueur pouvant aller jusqu'à 100 mm, une largeur inférieure à 5 mm et une épaisseur d'au maximum 50 µm.
  18. Elément oblong suivant ia revendication 1, caractérisé en ce que la bande amorphe utilisée a une longueur pouvant aller jusqu'à 60 mm, une largeur pouvant aller jusqu'à 3 mm et une épaisseur de bande pouvant aller au plus jusqu'à 40 µm.
  19. Elément oblong suivant la revendication 1, caractérisé en ce que le ruban amorphe utilisé a une longueur pouvant aller jusqu'à 40 mm, une largeur pouvant aller jusqu'à 3 mm et une épaisseur de bande pouvant aller jusqu'à 40 µm.
  20. Elément oblong suivant la revendication 17, caractérisé en ce que l'intensité de champ de commutation est inférieure à 0,75 A/cm.
  21. Elément oblong suivant la revendication 18, caractérisé en ce que l'intensité de champ de commutation est inférieure à 1,0 A/cm.
  22. Elément oblong suivant la revendication 19, caractérisé en ce que l'intensité de champ de commutation est inférieure à 1,5 A/cm.
  23. Elément oblong suivant la revendication 1, caractérisé en ce qu'il est utilisé comme ruban amorphe un fil métallique à section transversale circulaire ou elliptique.
  24. Procédé pour produire un ruban pour un élément oblong suivant la revendication 1, caractérisé en ce que l'on règle le courant dans le ruban lors du traitement thermique en rapport avec le champ longitudinal agissant de manière que le rapport du champ transversal maximum au champ longitudinal soit dans l'intervalle de 1 à 10.
EP96113005A 1995-09-09 1996-08-13 Corps allongés comme étiquette de sécurité pour des systèmes électromagnétiques antivol Expired - Lifetime EP0762354B1 (fr)

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 (fr) 1997-03-12
EP0762354B1 true EP0762354B1 (fr) 2000-11-15

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EP96113005A Expired - Lifetime EP0762354B1 (fr) 1995-09-09 1996-08-13 Corps allongés comme étiquette de sécurité pour des systèmes électromagnétiques antivol

Country Status (6)

Country Link
US (1) US5757272A (fr)
EP (1) EP0762354B1 (fr)
JP (1) JPH09148117A (fr)
DE (2) DE19533362A1 (fr)
DK (1) DK0762354T3 (fr)
ES (1) ES2152463T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2216897A1 (fr) * 1996-09-30 1998-03-30 Unitika Ltd. Ruban en alliage amorphe du groupe fe et marqueur magnetique
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 (fr) * 2005-04-26 2016-02-24 Amotech Co., Ltd. Feuille magnétique pour RFID et sa méthode de fabrication
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
JP5351956B2 (ja) * 2008-04-18 2013-11-27 メトグラス・インコーポレーテッド 遠隔温度検知デバイス及びそれに関連する遠隔温度検知方法
JP5351955B2 (ja) * 2008-04-18 2013-11-27 メトグラス・インコーポレーテッド 温度検知器及び関連する遠隔温度検知方法
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)

* Cited by examiner, † Cited by third party
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
JPH0625399B2 (ja) * 1986-11-03 1994-04-06 アライド・コーポレーション 高周波使用のための磁歪がほぼ０のガラス質合金
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

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EP0762354A1 (fr) 1997-03-12
ES2152463T3 (es) 2001-02-01
DE59606138D1 (de) 2000-12-21
JPH09148117A (ja) 1997-06-06
DE19533362A1 (de) 1997-03-13
US5757272A (en) 1998-05-26
DK0762354T3 (da) 2001-02-05

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