Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1982-07-14
1985-02-12
Wolff, John H.
Dynamic magnetic information storage or retrieval
Head
Hall effect
G11B 512, G11B 530
Patent
active
044995156
ABSTRACT:
A thin film magnetic recording playback head is disclosed wherein mechanically coupled films of a magnetostrictive material and of a piezoresistive material are utilized with a solid state amplifier electrically coupled to sense resistance changes in the piezoresistive film. In operation, localized magnetic patterns on a recording medium induce strain in the magnetostrictive film, which in turn induces in the piezoresistive film corresponding changes in electrical resistance.
REFERENCES:
patent: 3344237 (1967-09-01), Gregg
patent: 3908194 (1975-09-01), Romankiw
patent: 3909809 (1975-09-01), Kinsner et al.
patent: 3987485 (1976-10-01), Sugaya et al.
patent: 4129880 (1978-12-01), Vinal
IBM/TDB, vol. 21, No. 2, Jul. 1978, pp. 667-668, Magnetic Read/Write Thin Film Head . . . by Brunsch et al.
IBM/TDB, vol. 17, No. 12, May 1975, pp. 3751-3752, "Scanned MR Sensors", by Lean et al.
Int. J. Electronics, 1981, vol. 51, No. 3, pp. 255-263-"A Broadband Magneto-Electric Transducer . . . ", by Bracke et al.
Loeding Neil W.
Piotrowski Chester
Warner, Jr. Raymond M.
Barte William B.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Smith James A.
Wolff John H.
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