Epitaxial magnetoelectric Pb(Zr0.52Ti0.48)O3SrRuO3CoFe2O4 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.

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