Magnetoelectric coupling in CoFe₂O₄/SrRuO₃/Pb(Zr₀.₅₂Ti₀.₄₈)O₃ heteroepitaxial thin film structure

Abstract

Epitaxial magnetoelectric Pb(Zr[sub 0.52]Ti[sub 0.48])O₃/SrRuO₃/CoFe₂O₄ composite thin films are fabricated on SrTiO₃ single crystal substrate by pulsed-laser deposition. x-ray diffraction study reveals their crystalline structure and epitaxial relationship, which is cubic on cubic without in-plane rotation. The good dielectric, ferroelectric, and magnetic properties for the heteroepitaxial films are obtained simultaneously under room temperature, and the magnetoelectric coupling effect is manifested by the magnetic-field-dependent ferroelectric characteristics and spectroscopic dielectric constant.