DE69817666D1 - Magnetisch polarisiertes Material und Verfahren zu dessen Herstellung für magnetische Markierungselemente - Google Patents

Magnetisch polarisiertes Material und Verfahren zu dessen Herstellung für magnetische Markierungselemente

Info

Publication number
DE69817666D1
DE69817666D1 DE69817666T DE69817666T DE69817666D1 DE 69817666 D1 DE69817666 D1 DE 69817666D1 DE 69817666 T DE69817666 T DE 69817666T DE 69817666 T DE69817666 T DE 69817666T DE 69817666 D1 DE69817666 D1 DE 69817666D1
Authority
DE
Germany
Prior art keywords
production
marking elements
magnetically polarized
polarized material
magnetic marking
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
Application number
DE69817666T
Other languages
English (en)
Inventor
Noriyuki Nakaoka
Tsutomu Inui
Akira Kawakami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Application granted granted Critical
Publication of DE69817666D1 publication Critical patent/DE69817666D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • 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
    • 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
    • H01F1/0036—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity
    • H01F1/0045—Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use
    • H01F1/0063—Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use in a non-magnetic matrix, e.g. granular solids

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nanotechnology (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Security & Cryptography (AREA)
  • Health & Medical Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Burglar Alarm Systems (AREA)
DE69817666T 1997-04-30 1998-04-28 Magnetisch polarisiertes Material und Verfahren zu dessen Herstellung für magnetische Markierungselemente Expired - Lifetime DE69817666D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11225997 1997-04-30

Publications (1)

Publication Number Publication Date
DE69817666D1 true DE69817666D1 (de) 2003-10-09

Family

ID=14582238

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69817666T Expired - Lifetime DE69817666D1 (de) 1997-04-30 1998-04-28 Magnetisch polarisiertes Material und Verfahren zu dessen Herstellung für magnetische Markierungselemente

Country Status (3)

Country Link
US (1) US6001194A (de)
EP (1) EP0875874B1 (de)
DE (1) DE69817666D1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6893511B1 (en) 1998-09-10 2005-05-17 Hitachi Metals, Ltd. Production method for semirigid magnetic material and semirigid material and magnetic marker using it
CN100447911C (zh) * 2006-06-16 2008-12-31 李霖 软磁材料偏置片的制造方法及使用该偏置片的防盗声磁标签
CN102298815B (zh) 2011-05-20 2014-03-12 宁波讯强电子科技有限公司 一种高矫顽力偏置片、其制造方法及用其制成的声磁防盗标签
WO2013027665A1 (ja) * 2011-08-19 2013-02-28 日立金属株式会社 半硬質磁性材料及びそれを用いてなる盗難防止用磁気センサ並びに半硬質磁性材料の製造方法
DE102016222781A1 (de) * 2016-11-18 2018-05-24 Vacuumschmelze Gmbh & Co. Kg Halbhartmagnetische Legierung für einen Aktivierungsstreifen, Anzeigeelement und Verfahren zum Herstellen einer halbhartmagnetischen Legierung
CN108564754B (zh) * 2018-06-15 2024-06-04 宁波讯强电子科技有限公司 一种声磁防盗标签及其偏置片
CN112522636A (zh) * 2020-11-13 2021-03-19 山东麦格智芯机电科技有限公司 一种Nb掺杂的铁铬钴永磁合金及其制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938125A (en) * 1974-02-20 1976-02-10 Minnesota Mining And Manufacturing Company Antipilferage system and marker therefor
JPS5849007B2 (ja) * 1979-10-31 1983-11-01 財団法人 電気磁気材料研究所 加工が容易で保磁力と最大エネルギ−積の大きい永久磁石およびその製造方法
JP2713711B2 (ja) * 1987-11-17 1998-02-16 日立金属株式会社 防犯センサ用マーカ
US5192375A (en) * 1988-12-20 1993-03-09 Kabushiki Kaisha Toshiba Fe-based soft magnetic alloy
CA2134342C (en) * 1993-02-26 1999-06-01 Toshiaki Mizoguchi Thin cast strip and thin steel sheet of common carbon steel containing large amounts of copper and tin and process for producing the same
US5565849A (en) * 1995-02-22 1996-10-15 Sensormatic Electronics Corporation Self-biased magnetostrictive element for magnetomechanical electronic article surveillance systems
US5469140A (en) * 1994-06-30 1995-11-21 Sensormatic Electronics Corporation Transverse magnetic field annealed amorphous magnetomechanical elements for use in electronic article surveillance system and method of making same
DE9412456U1 (de) * 1994-08-02 1994-10-27 Vacuumschmelze Gmbh, 63450 Hanau Amorphe Legierung mit hoher Magnetostriktion und gleichzeitig hoher induzierter Anisotropie
US5628840A (en) * 1995-04-13 1997-05-13 Alliedsignal Inc. Metallic glass alloys for mechanically resonant marker surveillance systems
JPH11172381A (ja) * 1997-12-10 1999-06-29 Hitachi Metals Ltd 磁気マーカ用バイアス材および磁気マーカ

Also Published As

Publication number Publication date
EP0875874B1 (de) 2003-09-03
EP0875874A2 (de) 1998-11-04
US6001194A (en) 1999-12-14
EP0875874A3 (de) 2000-04-12

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Legal Events

Date Code Title Description
8332 No legal effect for de