Magnetoelectric effect in crystallographically textured BaTiO3 films deposited on ferromagnetic metallic glass foils

Abstract

We demonstrate a significant control of the polarization response under an applied magnetic field for a magnetoelectric (ME) heterostructure. This structure was comprised of a 2 mu m thick ferroelectric BaTiO3 (BTO) film deposited on flexible ferromagnetic metallic glass foil (25 mu m thick). Au was used as a buffer layer to control BTO growth orientation, and to protect the metallic glass from oxidation. x-ray diffraction and scanning electron microscopy demonstrated the successful growth of well-crystallized BTO films with a high degree of (111) orientation on the amorphous metallic glass foils. Well-defined polarization (P-E) and magnetization (M-H) hysteresis loops confirmed the coexistence of ferroelectric and ferromagnetic properties. A ME voltage coefficient of about similar to 60 mV/cm Oe was measured. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3544352]

Description

Keywords

Amorphous metals, Gold, Magnetoelectric effects, Composite materials, Metallic thin films

Citation

Wang, Zhiguang, Yan, Li, Yang, Yaodong, Li, Jie-Fang, Das, Jaydip, Geiler, Anton L., Yang, Aria, Chen, Yajie, Harris, V. G., Viehland, D. (2011). Magnetoelectric effect in crystallographically textured BaTiO3 films deposited on ferromagnetic metallic glass foils. Journal of Applied Physics, 109(3). doi: 10.1063/1.3544352