Voltage control magnetism and ferromagnetic resonance in Fe19Ni81/PMN-PT heterostructure by strain

Voltage control magnetism have been widely studied due to their potential applications in the next generation of information technology. PMN-PT, as a single crystal ferroelectric substrate, has been widely used in the study of voltage control magnetism because of its excellent piezoelectric properties. However, most of the research based on PMN-PT only studies the influence of a single tensile (or compressive) stress on the magnetic properties due to the asymmetry of strain. In this work, we show the effect of different strains on the magnetic anisotropy of Fe19Ni81/(011) PMN-PT heterojunction. More importantly, the (011) cut PMN-PT has the characteristics of generating non-volatile strain, which provides the advantage for investigating the voltage manipulation of RF/microwave magnetic devices. As a result, a ferromagnetic resonance field tunability of 70 Oe is induced in our sample by the non-volatile strain. Our results provide new possibilities for novel voltage adjustable RF/microwave magnetic devices and spintronic devices.