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Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
Research Interests
  • Multiferroic
  • Ferroelectric
  • Quantum Magnetism

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Multiferroicity in doped hexagonal LuFeO3

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Title
Multiferroicity in doped hexagonal LuFeO3
Author
Disseler, Steven M.Luo, XuanGao, BinOh, Yoon SeokHu, RongweiWang, YazhongQuintana, DylanZhang, AlexanderHuang, QingzhenLau, JunePaul, RickLynn, Jeffrey W.Cheong, Sang-WookRatcliff, William, II
Issue Date
2015-08
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v.92, no.5, pp.054435
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 though Mn and Sc doping, and determine the complete magnetic and crystallographic structures using neutron-scattering and magnetometry techniques. The ferroelectric P6(3)cm 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 (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 the ferroelectric axis. We propose a mechanism by which room-temperature multiferroicity could be achieved in this class of materials
URI
https://scholarworks.unist.ac.kr/handle/201301/17585
URL
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.92.054435
DOI
10.1103/PhysRevB.92.054435
ISSN
2469-9950
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PHY_Journal Papers
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