Structural, dielectric, and magnetic properties of BiFeO₃-SrTiO₃ solid solution ceramics

ABSTRACT

In this work, we determine the structural, dielectric, and magnetic properties of (100-x) BiFeO₃ - x SrTiO₃ with x ranging from 5 to 30. The solid solution ceramics, which were prepared by solid-state reaction method, have been studied by X-ray diffraction, dielectric and magnetic measurements. The structure of the samples were confirmed as single phase perovskite structure and change from rhombohedral R3c space group to R3m for heavy doping of SrTiO₃. In comparison with other samples, 80 BiFeO₃ - 20 SrTiO₃ shows significantly enhanced dielectric constant, maximum of magnetization, and additional dielectric anomaly, indicating strong magnetoelectric coupling in it.

KEYWORDS:

• Perovskites
• dielectric properties
• magnetic properties
• solid solution

Funding

This work was supported by Start-up grant from Shanghai University of Engineering Science under Grant No. 2014-35, and fund for young Teachers from Shanghai Municipal Education Commission under Grant No. ZZgcd14009.