Integrated magnetostrictive-piezoresistive magnetic...

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G - Physics

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G11B 5/33 (2006.01) G01R 33/06 (2006.01) G11B 5/127 (2006.01) G11B 5/58 (2006.01) H01L 41/12 (2006.01)

Patent

CA 1196093

-22- INTEGRATED MAGNETOSTRICTIVE-PIEZORESISTIVE MAGNETIC RECORDING 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 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.

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