Multiferroicity in Doped Hexagonal LuFeO3

Published

August 27, 2015

Author(s)

Steven M. Disseler, Xuan Luo, Bin Gao, Yoon Seok Oh, Rongwei Hu, Yazhong Wang, Dylan Quintana, Alexander Zhang, Qingzhen Huang, June W. Lau, Rick L. Paul, Jeffrey W. Lynn, Sang-Wook Cheong, William D. Ratcliff

Abstract

The hexagonal phase of LuFeO₃ is a rare example of a multiferroic material possessing a weak ferromagnetic moment, which is predicted to be switchable by an electric field. We stabilize this structure in bulk form through Mn and Sc doping, and determine for the first time the complete magnetic and crystallographic structures using neutron scattering and magnetometry techniques. The ferroelectric P6₃cm space group is found to be stable over a wide concentration range, ordering antiferromagnetically with Neel temperatures that smoothly increase following the ratio of c to a{?I}(c/a) lattice parameters up to 172 K, the highest found in this class of materials to date. The magnetic structure for a range of temperatures and dopings is consistent with recent studies of high-quality epitaxial films of pure hexagonal LuFeO₃ including a ferromagnetic moment parallel to ferroelectric axis. We propose a mechanism by which room temperature multiferroicity could be achieved in this class of materials.

Citation

Physical Review B

Volume

92

Issue

5

Pub Type

Journals

Download Paper

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Keywords

Multiferroic, neutron scattering, crystallography

Citation

Disseler, S. , Luo, X. , Gao, B. , , Y. , Hu, R. , Wang, Y. , Quintana, D. , Zhang, A. , Huang, Q. , Lau, J. , Paul, R. , Lynn, J. , Cheong, S. and Ratcliff, W. (2015), Multiferroicity in Doped Hexagonal LuFeO₃, Physical Review B, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=919202 (Accessed December 4, 2024)