Effects of Mn and Cu Doping on Electrical Properties of 0.75BiFeO₃-0.25BaTiO₃ Ceramics

Abstract

In this study, 0.75BiFeO₃-0.25BaTiO₃ ceramics doped with Mn and Cu (0, 1, 2, 3, 4 and 5 mol%) have been fabricated with an effective solid-state reaction method developed for high purity ceramics. Attention has been focused on relationships between phase formation, density, dielectric and ferroelectric properties of the sintered ceramics. It was found that Mn and Cu doping affected the dielectric and ferroelectric properties of these ceramics. In addition, Cu and Mn doping was also found to improve the sintering ability and change the structural symmetry of this system from rhombohedral to tetragonal.

Keywords:

• BF-BT
• electrical properties
• doping

Acknowledgments

This work was financially supported by the Industry/University Cooperative Research Center (I/UCRC) in HDD Component, the Faculty of Engineering, Khon Kaen University and National Electronics and Computer Technology Center, National Science and Technology Development Agency (NSTDA). One of the authors (S.C.) is also thankful to the Synchrotron Light Research Institute (Public Organization) for PhD scholarship. One of the authors (SR) acknowledged the support by NANOTEC (Grant No. NN-B-22-DI2-20-51-09).