Thin-film magnetic material and process of production thereof

Details Thin-film magnetic material and process of production thereof Thin-film magnetic material and process of production thereof

1991-03-22

1993-01-19

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

148100, 2041921, 340572, 428900, G08B 1324

Patent

active

051810204

ABSTRACT:
A thin-film magnetic material is formed on a polymer substrate. The material exhibits large Barkhausen discontinuity without intentional application of external tensile or torsional stress. The thin-film material may be produced by a sputtering technique wherein the normal to the substrate is directed obliquely to a target member. A biasing magnetic field in proximity to the substrate may also be used during film formation, and the substrate may be supported by a curved holder or a cylindrical roll-to-roll apparatus. The thin-film thus produced may be used as a marker in an article surveillance system or as a magnetic sensor.

REFERENCES:
patent: 3765007 (1973-10-01), Elder
patent: 4222517 (1980-09-01), Richardson
patent: 4236946 (1980-12-01), Aboaf et al.
patent: 4298862 (1981-11-01), Gregor et al.
patent: 4484184 (1984-11-01), Gregor et al.
patent: 4510490 (1985-04-01), Anderson, III et al.
patent: 4660025 (1987-04-01), Humphrey
patent: 4960651 (1990-10-01), Pettigrew et al.
patent: 4980670 (1990-12-01), Humphrey et al.
Dai 13 Kai Nihon Oyo Jiki Gakkai Gakujutsu Koen Yoshishu (Resume for the 13th Lecture of the Magnetics Society of Japan), p. 24aE-7.
The Physical Review, vol. 37, No. 7, Apr. 1, 1931, Minneapolis, Minn. USA K. J. Sixtus et al. "Propagation of Large Barkhausen Discontinuities", pp. 930-958.
The Physical Review, vol. 39, second series, Jan.-Mar. 1932, Minneapolis, Minn, USA K. J. Sixtus et al., "Further Experiments on the propagation of Large Barkhausen Discontinuities", pp. 357-358.
The Physical Review, vol. 42, second series, Oct.-Dec. 1932, New York K. J. Sixtus et al. "Propagation of Large Barkhausen Discontinuties II", pp. 419-436.
The Physical Review, vol. 43, second series, Jan.-Jun. 1933, New York, USA L. Tonks et al. "Propagation of Large Barkhausen Discontinuties IV, Regions of Reversed Magnetization", pp. 931-940.
The Physical Review, vol. 43, second series, Jan.-Jun. 1933, USA L. Tonks et al., "Propagation of Large Barkhausen Discontinuities, III. Effect of a Circular Field with Torsion", pp. 70-80.
IEEE Transactions on Magnetics, vol. Maj.-17, No. 6, Nov. 1981 K. Mohri et al., "Sensitive Magnetic Sensors Using Amorphons Wiegend-Type Ribbons", pp. 3370-3372.
Physikalische Zeitschrift, XX, Jahrgang, 1919 Dr. P. Debye "Barkhausen, zwei neue Erscheinungen", pp. 401-403.

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