Magnetic and electrical properties of single-phase multiferroic BiFeO₃

Authors

Aswini K. Pradhan, Center for Materials Research, Norfolk State UniversityFollow
Kai Zhang, Center for Materials Research, Norfolk State University, Norfolk, Virginia
D. Hunter, Center for Materials Research, Norfolk State University, Norfolk, Virginia
J.B. Dadson, Center for Materials Research, Norfolk State University, Norfolk, Virginia
G.B. Loiutts, Center for Materials Research, Norfolk State University, Norfolk, Virginia
P. Bhattacharya, Department of Physics, University of Puerto Rico, San Juan, Puerto Rico
R. Katiyar, Department of Physics, University of Puerto Rico, San Juan, Puerto Rico
Jun Zhang, University of Nebraska - LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow
U.N. Roy, Department of Physics, Fisk University, Nashville, Tennessee
Y. Cui, Department of Physics, Fisk University, Nashville, Tennessee
A. Burger, Department of Physics, Fisk University, Nashville, Tennessee

Date of this Version

5-1-2005

Comments

Published by American Institute of Physics. J. Applied Physics 97, 093903 (2005). ©2005 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

We have reported the structural, thermal, microscopic, magnetization, polarization, and dielectric properties of BiFeO₃ ceramics synthesized by a rapid liquid-phase sintering technique. Optimum conditions for the synthesis of single-phase BiFeO₃ ceramics were obtained. Temperature-dependent magnetization and hysteresis loops indicate antiferromagnetic behavior in BiFeO₃ at room temperature. Although saturated ferroelectric hysteresis loops were observed in single-phase BiFeO₃ ceramic synthesized at 880 °C, the reduced polarization is found to be due to the high loss and low dielectric permittivity of the ceramic, which is caused by higher leakage current.