Low-Temperature Sintering and Electromagnetic Properties of NiCuZn/BaFe_0.5Nb_0.5O₃ Composites

Abstract

Dense Ni_0.37Cu_0.20Zn_0.43Fe_1.92O_3.88/BaFe_0.5Nb_0.5O₃ composites were prepared by the conventional solid-state method and sintered at 950°C. The powder x-ray diffraction (XRD) patterns confirm the coexistence of the two phases. The dielectric and magnetic properties are also reported. The results show that the as-prepared composites possess high dielectric constant and permeability, which could be used in high-frequency communications for the capacitor-inductor integrating devices such as electromagnetic interference filters and antennas.

Keywords:

• BaFe_0.5Nb_0.5O₃
• Composites
• Dielectric properties
• Low temperature sintering
• Magnetic properties
• NiCuZn ferrite

ACKNOWLEDGMENTS

This work is supported by the National Natural Science Foundation of China (grant no. 50902090, 50802057), the Natural Science Foundation of Shaanxi Province (grant no. 2009JQ6006), the Special Foundation of Educational Department of Shaanxi Province (grant no. 2010JK435), and the Natural Science Foundation of Shaanxi University of Science and Technology (grant no. ZX09-18).