Piezo-voltage manipulation of the magnetization and magnetic reversal in Fe/GaAs

Electric field control of the ferromagnetic magnetization process has become increasingly important because its great potential applications for the memory device, magnetic logic, magneto-electric sensor and the integration of magnetic functionalities into electronic circuits. Since the magneto crystalline anisotropy is originated from the spin-orbital coupling of the materials, modification of lattice constant using piezo voltage can thus directly manipulate the magnetic anisotropy and the magnetization reversal. In the past decade, the semiconductor spintronics including spin injection, spin transport and spin Hall effect based on the Fe/n-GaAs heterostructure have been extensively studied. However, to our knowledge, till now there isn´t any report about the manipulation of the ferromagnetization based on the Fe/n-GaAs heterostructure. In this work, we carefully investigated the piezo voltage manipulation of the magnetic properties of the Fe/n-GaAs/piezoelectric heterostructure.