CA2280143A1 - Active element for magnetomechanical eas marker incorporating particles of bias material - Google Patents
Active element for magnetomechanical eas marker incorporating particles of bias material Download PDFInfo
- Publication number
- CA2280143A1 CA2280143A1 CA002280143A CA2280143A CA2280143A1 CA 2280143 A1 CA2280143 A1 CA 2280143A1 CA 002280143 A CA002280143 A CA 002280143A CA 2280143 A CA2280143 A CA 2280143A CA 2280143 A1 CA2280143 A1 CA 2280143A1
- Authority
- CA
- Canada
- Prior art keywords
- amorphous alloy
- strip
- amorphous
- eas marker
- alloy strip
- 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.)
- Granted
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
-
- 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
- H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
-
- 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
- H01F1/15341—Preparation processes therefor
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N35/00—Magnetostrictive devices
- H10N35/80—Constructional details
- H10N35/85—Magnetostrictive active materials
Abstract
A self-biasing magnetostrictive element (10) for use in a magnetomechanical EAS marker is a strip of amorphous alloy material distributed throughout the bulk of the amorphous alloy strip. The crystalline particles (12) are magnetized to bias the amorphous alloy strip (14) to resonate in response to an interrogation signal. The crystalline particles (12) are formed by heat-treating the amorphous alloy strip (14) at a temperature above the Curie temperature of the amorphous alloy in the presence of a longitudinal magnetic field. The alloy strip (14) is then cross-field annealed at a temperature below the Curie temperature of the amorphous alloy to form a transverse anisotropy in the amorphous bulk of the alloy strip (14). A
preferred alloy composition includes iron, cobalt, niobium, copper, boron and silicon.
preferred alloy composition includes iron, cobalt, niobium, copper, boron and silicon.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/800,772 | 1997-02-14 | ||
US08/800,772 US5825290A (en) | 1997-02-14 | 1997-02-14 | Active element for magnetomechanical EAS marker incorporating particles of bias material |
PCT/US1998/002085 WO1998038606A2 (en) | 1997-02-14 | 1998-02-04 | Active element for magnetomechanical eas marker incorporating particles of bias material |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2280143A1 true CA2280143A1 (en) | 1998-09-03 |
CA2280143C CA2280143C (en) | 2008-12-09 |
Family
ID=25179317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002280143A Expired - Fee Related CA2280143C (en) | 1997-02-14 | 1998-02-04 | Active element for magnetomechanical eas marker incorporating particles of bias material |
Country Status (8)
Country | Link |
---|---|
US (1) | US5825290A (en) |
EP (1) | EP1016096A4 (en) |
JP (1) | JP2001513241A (en) |
AR (1) | AR011131A1 (en) |
AU (1) | AU725513B2 (en) |
BR (1) | BR9807836A (en) |
CA (1) | CA2280143C (en) |
WO (1) | WO1998038606A2 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6229445B1 (en) * | 1997-01-13 | 2001-05-08 | Tecsec, Incorporated | RF identification process and apparatus |
US5999098A (en) * | 1998-02-03 | 1999-12-07 | Sensormatic Electronics Corporation | Redistributing magnetic charge in bias element for magnetomechanical EAS marker |
US5982282A (en) * | 1998-09-16 | 1999-11-09 | Sensormatic Electronics Corporation | Product authentication indicia concealed in magnetomechanical EAS marker |
JP4128721B2 (en) * | 2000-03-17 | 2008-07-30 | 株式会社東芝 | Information record article |
KR20020006170A (en) * | 2000-07-11 | 2002-01-19 | 김창경 | Magnetized Self-Biased Magnetoelastic Sensor for Electronic Article Surveillance and Article Identification |
US7568630B2 (en) * | 2001-09-14 | 2009-08-04 | Roke Manor Research Limited | RF tag and RF tagging system |
US7193715B2 (en) * | 2002-11-14 | 2007-03-20 | Tokyo Electron Limited | Measurement of overlay using diffraction gratings when overlay exceeds the grating period |
US8099335B2 (en) * | 2004-02-23 | 2012-01-17 | Checkpoint Systems, Inc. | Method and system for determining billing information in a tag fabrication process |
US7704346B2 (en) | 2004-02-23 | 2010-04-27 | Checkpoint Systems, Inc. | Method of fabricating a security tag in an integrated surface processing system |
US7384496B2 (en) | 2004-02-23 | 2008-06-10 | Checkpoint Systems, Inc. | Security tag system for fabricating a tag including an integrated surface processing system |
US7138919B2 (en) * | 2004-02-23 | 2006-11-21 | Checkpoint Systems, Inc. | Identification marking and method for applying the identification marking to an item |
US7119685B2 (en) * | 2004-02-23 | 2006-10-10 | Checkpoint Systems, Inc. | Method for aligning capacitor plates in a security tag and a capacitor formed thereby |
US7116227B2 (en) * | 2004-02-23 | 2006-10-03 | Checkpoint Systems, Inc. | Tag having patterned circuit elements and a process for making same |
US9897556B2 (en) | 2014-05-08 | 2018-02-20 | National Technology & Engineering Solutions Of Sandia, Llc | Elemental analysis using temporal gating of a pulsed neutron generator |
US9275529B1 (en) | 2014-06-09 | 2016-03-01 | Tyco Fire And Security Gmbh | Enhanced signal amplitude in acoustic-magnetomechanical EAS marker |
US9418524B2 (en) | 2014-06-09 | 2016-08-16 | Tyco Fire & Security Gmbh | Enhanced signal amplitude in acoustic-magnetomechanical EAS marker |
ES2581127B2 (en) * | 2016-04-13 | 2017-05-04 | Universidad Complutense De Madrid | Label, system and method for long-distance object detection |
RU2638848C1 (en) * | 2016-06-29 | 2017-12-18 | Акционерное общество "ГОЗНАК" | Valuable document protected from forgery and method of determining its authenticity |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2805212C3 (en) * | 1978-02-08 | 1980-10-02 | Windmoeller & Hoelscher, 4540 Lengerich | Device for checking the bottom folds of bottoms formed on pieces of tubing |
US4510489A (en) * | 1982-04-29 | 1985-04-09 | Allied Corporation | Surveillance system having magnetomechanical marker |
GB8713353D0 (en) * | 1987-06-08 | 1987-07-15 | Scient Generics Ltd | Magnetic article surveillance systems |
JP2713711B2 (en) * | 1987-11-17 | 1998-02-16 | 日立金属株式会社 | Security sensor marker |
GB8817855D0 (en) * | 1988-07-27 | 1988-09-01 | Emi Plc Thorn | Electromagnetic identification system |
US5252144A (en) * | 1991-11-04 | 1993-10-12 | Allied Signal Inc. | Heat treatment process and soft magnetic alloys produced thereby |
KR950034083A (en) * | 1994-02-10 | 1995-12-26 | 오가 노리오 | Magnetic head |
US5568125A (en) * | 1994-06-30 | 1996-10-22 | Sensormatic Electronics Corporation | Two-stage annealing process for amorphous ribbon used in an EAS marker |
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 |
US5565849A (en) * | 1995-02-22 | 1996-10-15 | Sensormatic Electronics Corporation | Self-biased magnetostrictive element for magnetomechanical electronic article surveillance systems |
-
1997
- 1997-02-14 US US08/800,772 patent/US5825290A/en not_active Expired - Fee Related
-
1998
- 1998-02-04 BR BR9807836-4A patent/BR9807836A/en not_active Application Discontinuation
- 1998-02-04 CA CA002280143A patent/CA2280143C/en not_active Expired - Fee Related
- 1998-02-04 AU AU62657/98A patent/AU725513B2/en not_active Ceased
- 1998-02-04 JP JP53765398A patent/JP2001513241A/en not_active Ceased
- 1998-02-04 WO PCT/US1998/002085 patent/WO1998038606A2/en active IP Right Grant
- 1998-02-04 EP EP98904892A patent/EP1016096A4/en not_active Withdrawn
- 1998-02-11 AR ARP980100594A patent/AR011131A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU725513B2 (en) | 2000-10-12 |
WO1998038606A2 (en) | 1998-09-03 |
BR9807836A (en) | 2000-06-06 |
JP2001513241A (en) | 2001-08-28 |
WO1998038606A3 (en) | 1998-12-10 |
AU6265798A (en) | 1998-09-18 |
EP1016096A2 (en) | 2000-07-05 |
US5825290A (en) | 1998-10-20 |
CA2280143C (en) | 2008-12-09 |
EP1016096A4 (en) | 2002-05-22 |
AR011131A1 (en) | 2000-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2280143A1 (en) | Active element for magnetomechanical eas marker incorporating particles of bias material | |
AU757664B2 (en) | Iron-rich magnetostrictive element having optimized bias-field-dependent resonant frequency characteristic | |
US5650023A (en) | Metallic glass alloys for mechanically resonant marker surveillance systems | |
CA2146814A1 (en) | Transverse magnetic field annealed amorphous magnetomechanical elements for use in electronic article surveillance system and method of making same | |
CA2093938C (en) | Deactivatable/reactivatable magnetic marker having a step change in magnetic flux | |
WO1998038606B1 (en) | Active element for magnetomechanical eas marker incorporating particles of bias material | |
CA2269041A1 (en) | Magnetostrictive element for use in a magnetomechanical surveillance system | |
JPS57169050A (en) | Temperature sensitive amorphous magnetic alloy | |
AU602799B2 (en) | Economic, multi-directionally responsive marker for use in electronic article surveillance systems | |
US4375372A (en) | Use of cubic rare earth-iron laves phase intermetallic compounds as magnetostrictive transducer materials | |
JPS5735657A (en) | Material for temperature sensitive element | |
JPH06124818A (en) | Semihard magnetic element and manufacture | |
JP4447055B2 (en) | Metallic glass alloy for mechanical resonant sign monitoring system | |
JP3955623B2 (en) | Metallic glass alloys for monitoring devices with mechanically resonating markers | |
KR100576075B1 (en) | Metallic glass alloys for mechanically resonant marker surveillance systems | |
AU736092B2 (en) | Magnetostrictive element having optimized bias-field-dependent resonant frequency characteristic | |
Quandt et al. | Giant magnetostrictive materials and applications | |
CA2217722C (en) | Metallic glass alloys for mechanically resonant marker surveillance systems | |
Kim et al. | Development of a magnetoelastic resonant sensor using iron-rich, nonzero magnetostrictive amorphous alloys | |
Ishio et al. | Magnetostriction of rapidly quenched Sm (FeCo) and Pr (FeCo) alloys | |
CA2494255A1 (en) | Transverse magnetic field annealed amorphous magnetomechanical elements for use in electronic article surveillance system and method of making same | |
Fujii et al. | Magnetoelastic and Magnetoacoustic Wave Properties in Highly Magnetostrictive Amorphous Materials | |
GAILLOUX | The low temperature properties of(Dy (1-x) Er (x)) Ni 2 alloys(Ph. D. Thesis) | |
JPS57167605A (en) | Temperature sensing element material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |