Evaluation of structural and multifunctional properties of BaTiO3-NiFe2-xSmxO4 ceramic composites

In this paper, the multi-phase ceramic composites, consisting of dielectric barium titanate BaTiO3 (BTO) and rare-earth-doped magnetic spinel ferrite NiFe2-xSmxO4 (NFSO) with x= 0.00, 0.10, and 0.20 were synthesized through solid-state route. The structure of the prepared samples has been examined through XRD. The results indicate the occurrence of both perovskite (BaTiO3) and spinel (NiFe2-xSmxO4) phases in the prepared composites.The magnetic as well as dielectric properties of the prepared samples were investigated and P-E hysteresis loops were recorded at various voltages. It has been found that the higher Sm concentration composite exhibits high dielectric permittivity (similar to 9200) along with high remnant polarization (0.54 mu C/cm(2)) and low saturation magnetization (12 emu/g) at room temperature. The analysis showed that the ferrite phase (NFS0) has influenced the magnetic properties and dielectric response of BaTiO3 material.

Automated summary

In this study, multi-phase ceramic composites consisting of barium titanate and rare-earth-doped magnetic spinel ferrite were synthesized and their structure, magnetic properties, and dielectric properties were investigated. The results showed that the rare-earth-doped magnetic spinel ferrite affected the magnetic and dielectric response of barium titanate.