Abstract
The converse magnetoelectric effect in the ferroelectric/ferrimagnetic bilayers shows a great promise for realizing energy efficient, dense, and fast information storage and processing. In this study, we prepare the hybrid structures consisting of a ferroelectric layer BaTiO3 (BTO) and a ferrimagnetic insulator layer Y3Fe5O12 (YIG) via magnetron sputtering technique and post-annealing procedure. A visible ferroelectricity hysteresis loop for the BTO film and an apparent magnetic hysteresis loop for the YIG film are obtained. Moreover, by capping a platinum layer on the hybrid structures and performing longitudinal spin Seebeck measurements, a detectable spin-charge conversion voltage is observed, and even significant manipulation of this conversion in BTO/YIG/Pt trilayers is achieved by electrical means. These results show great potential for the development of tunable YIG-based devices and are instructive for future artificial multiferroic heterostructures devices applications.
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