Integrated magnetostrictive-piezoelectric-metal oxide...

Details Integrated magnetostrictive-piezoelectric-metal oxide... Integrated magnetostrictive-piezoelectric-metal oxide...

G - Physics

11

B

352/29.4

G11B 5/33 (2006.01) G11B 5/58 (2006.01)

Patent

CA 1193361

INTEGRATED MAGNETOSTRICTIVE-PIEZOELECTRIC-METAL OXIDE SEMICONDUCTOR MAGNETIC PLAYBACK HEAD Abstract of the Disclosure A thin-film magnetic recording playback head is disclosed wherein mechanically coupled films of a magneto- strictive material and of a piezoelectric material are deposited on a substrate together with a solid state ampli- fier which is coupled to the piezoelectric film. In opera- tion, localized magnetic patterns on a recording medium induce stress in the magnetostrictive film, which in turn induces in the piezoelectric film a corresponding electri- cal polarization of non-equilibrium charge density, having a potential associated therewith which is applied to the solid state amplifier.

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