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Multiferroicity in Doped Hexagonal LuFeO3



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


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.
Physical Review B


Multiferroic, neutron scattering, crystallography


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 LuFeO<sub>3</sub>, Physical Review B, [online], (Accessed February 23, 2024)
Created August 27, 2015, Updated February 19, 2017