Effect of addition of zinc ferrite on dielectric and magnetic properties of (Ba,Ca)TiO₃ ceramics

ABSTRACT

Multiferroic composites comprising BaCaTiO₃ as ferroelectric phase and ZnFe₂O₄ as ferrite phase with formula (1-x) Ba_0.96Ca_0.04TiO₃–(x) ZnFe₂O₄ are fabricated by solid state reaction method. XRD results confirm that samples have a tetragonal structure with ferrite phase at room temperature with average particle size of 70–90nm. Dielectric behaviouar shows anomalies for frequency 500 Hz at 254°C and 239°C for x = 0.10 and 0.20 for the frequency 1 kHz anomalies are found at 269°C and 244 ⁰ C for x = 0.10 and 0.20. The retentivity value for x = 0.20 is 0.234 and coercivity 0.119 respectively.

KEYWORDS:

• BCT-ZF
• X-ray diffraction
• VSM
• multiferroics

Funding

Authors are grateful to the Defence Research and Development Organization (DRDO), Govt. of India, for financial support under the research project ERIP/ER/1303129/M/01/1564.