Magnetoelectric Properties of Cu- and Mn-Doped 0.75BiFeO₃–0.25BaTiO₃ Multiferroic Ceramics

Abstract

In this study, 0.75BiFeO₃–0.25BaTiO₃ ceramics doped with Mn and Cu (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 sintering conditions, phase formation, density, and magnetoelectric properties of the sintered ceramics. It was found that Cu and Mn doping affected significantly the dielectric, ferroelectric, ferromagnetic and magnetoelectric properties of these ceramics. At certain level of addition, both Mn and Cu doping were found to enhance the ferroelectric and ferromagnetic characteristics of the BiFeO₃-BaTiO₃ multiferroic ceramics. Finally, magnetoelectric properties of the ceramics were also determined. The addition of the Cu and Mn ions was found to noticeably improve the magnetoelectric properties of the ceramics.

Keywords:

• ME effect
• BF-BT
• Mn and Cu 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 and to Suranaree University of Technology for additional support. Another author (S.R.) would also like to acknowledge the support by NANOTEC (Grant No.NN-B-22-DI2–20-51–09) and Thailand Research Fund (Grant No. RTA5280009).