INTEGRATED MAGNETOSTRICTIVE-PIEZORESISTIVE MAGNETIC RECORDING PLAYBACK HEAD

摘要

INTEGRATED MAGNETOSTRICTIVE-PIEZORESISTIVE MAGNETIC RECORDING PLAYBACK HEAD 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.