Dielectric and magnetic properties of BaTiO3/Ni0.5Zn0.5Fe2O4 composite ceramics synthesized by a co-precipitation process

Abstract In this paper, we report the preparation of BaTiO 3 (BT)/Ni 0.5 Zn 0.5 Fe 2 O 4 (NZFO) ceramics which own the microstructure of BT coated by NZFO through the co-precipitation procedure (BNCP). X-ray diffraction measurements are used to demonstrate the phase change with different molar ratio of NZFO:BT, and their dielectric and magnetic properties of the composite has been investigated by a RF Impedance/Material Analyzer and M–H loop measurement. The results indicate that the BNCP composite ceramics with NZFO:BT molar ratio at 1.5:1 owns the largest Q (the quality factor) and product of μ i × Q and shows nice comprehensive performance in multiferroic field. In addition, this inner BT phase endow the ceramic composites higher cut-off frequency f r and broaden the frequency scope of the composites with higher permeability which could greatly benefit its application.