Ferroelectric, magnetic, magnetoelectric properties of the Ba_(0.9)Ca_(0.1)Ti_(0.9)Zr_(0.1)O_3/CoFe_2O_4 laminated composites

摘要

Magnetoelectric Ba_(0.9)Ca_(0.1)Ti_(0.9)Zr_(0.1)O_3/CoFe_2O_4 (BCZT/CFO) laminated composites were prepared via the conventional solid state synthesis method and their phase composition and surface morphology were investigated by X-ray diffractometry, scanning electronic microscopy and energy dispersive spectrometry. Their ferroelectric, magnetic and magnetoelectric properties were also studied. The results show that BCZT and CFO phases coexist in the composites. The magnetoelectric behavior is strongly dependent on the contents of CFO and dc magnetic field. The maximum magnetoelectric coefficient of the laminated composite reaches about 159 mV/cm Oe at 1120 Oe. Due to its ability of responding to magnetic or electric field, this laminated composite is expected to find application in data storage and magnetic field sensors.