Room-Temperature Multiferroic Hexagonal LuFeO3 Films

Authors

Wenbin Wang, University of Tennessee, Knoxville
Jun Zhao, Fudan University
Wenbo Wang, Rutgers University
Zheng Gai, Oak Ridge National Laboratory
Nina Balke, Argonne National Laboratory
Miaofang Chi, Oak Ridge National Laboratory
Ho Nyung Lee, Oak Ridge National Laboratory
Wei Tian, Oak Ridge National Laboratory
Leyi Zhu, Argonne National Laboratory
Xuemei Cheng, Bryn Mawr College
David J. Keavney, Argonne National Laboratory
Jieyu Yi, University of Tennessee, Knoxville
Thomas Z. Ward, Oak Ridge National Laboratory
Paul C. Snijders, Oak Ridge National Laboratory
Hans M. Christen, Oak Ridge National Laboratory
Weida Wu, Rutgers University
Jian Shen, shenj5494@fudan.edu.cn
Xiaoshan Xu, University of Nebraska-LincolnFollow

Date of this Version

2013

Document Type

Article

Citation

PRL 110, 237601 (2013)

Comments

Used by permission.

Abstract

The crystal and magnetic structures of single-crystalline hexagonal LuFeO₃ films have been studied using x-ray, electron, and neutron diffraction methods. The polar structure of these films are found to persist up to 1050 K; and the switchability of the polar behavior is observed at room temperature, indicating ferroelectricity. An antiferromagnetic order was shown to occur below 440 K, followed by a spin reorientation resulting in a weak ferromagnetic order below 130 K. This observation of coexisting multiple ferroic orders demonstrates that hexagonal LuFeO₃ films are room-temperature multiferroics.