Integrated magnetostrictive-piezoelectric-metal oxide semiconductor magnetic playback head

Abstract From the Canadian patent

Abstract of the Disclosure, A thin-film magnetic recording playback head is disclosed wherein mechanically coupled films of a magnetostrictive material and of a piezoelectric material are deposited on a substrate together with a solid state amplifier which is coupled to the piezoelectric film. In operation, localized magnetic patterns on a recording medium induce stress in the magnetostrictive film which in turn, induces in the piezoelectric film a corresponding electrical polarization of non-equilibrium charge density having, a potential associated therewith which is applied to the solid state amplifier.