Title:
SECURITY DEVICE COMPRISING SOFT MAGNETIC THIN FILM
Document Type and Number:
WIPO Patent Application WO2000005693
Kind Code:
A3
Abstract:
A security device such as an anti-pilferage label or authentication label comprises as security feature a (first) soft-magnetic thin film having a thickness ranging from 100 nm to 2000 nm. The thin film is composed of an amorphous CoxZryNbz alloy, where x, y and z are atomic percentages and fulfil following conditions: (a) x ranging between 80 and 95; (b) y and z ranging between 0 and 20; (c) y + z = 100 - x. Due to the high effective relative permeability mu r, and the direction of its easy axis, a label with a CoZrNb thin film is relatively independent of its geometry.
Inventors:
TE LINTELO JOHANNES (BE)
Application Number:
PCT/EP1999/004942
Publication Date:
February 07, 2002
Filing Date:
July 12, 1999
Export Citation:
Assignee:
INNOVATIVE SPUTTERING TECH (BE)
TE LINTELO JOHANNES (BE)
TE LINTELO JOHANNES (BE)
International Classes:
G08B13/24; H01F10/12; H01F10/13; (IPC1-7): G08B13/24; H01F10/12
Foreign References:
| EP0295028A1 | 1988-12-14 | |||
| EP0147126A2 | 1985-07-03 |
Other References:
ROUABHI M ET AL: "DOMAIN WALL PINNING AND HYSTERESIS LOSSES IN AMORPHOUS CONBZR FILMS", IEEE TRANSACTIONS ON MAGNETICS, vol. 29, no. 6, 1 November 1993 (1993-11-01), pages 3502 - 3504, XP000429390
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