STRUCTURE, MICROSTRUCTURE AND DIELECTRIC STUDY OF (BA0.6SR0.4)(ZR0.6TI0.4)O3-NB2O5 - FE2O3-RE (RE=LA2O3,GD2O3) CERAMICS

Chandrashekar M Tavade, Nagbasawanna Sharanappa, R.L.Raibagkar

Abstract: The influence of La and Gd doped on the microstructure and dielectric properties, including the phase structure, temperature dependence of permittivity, (Ba0.6Sr0.4)(Zr0.6Ti0.4)O3–Nb2O5–Fe2O3(BSZT40NF) materials have been investigated by X-ray diffraction, SEM, and LCR analyzer, respectively. Experimental results revealed that incorporation of proper content of La and Gd basically soluted in the lattice of BSZT40NF and can control the grain growth, reduce the dielectric loss of the BSZT40NF materials. The development of microstructure promoted by the additives can result in the improvement of the dielectric constant.

Keywords: Perovskite, BT, BSZT, Rare earth ion, SEM, dielectric properties

DOI: https://doi.org/10.15623/ijret.2014.0315116