Статья

Multiferroicity in doped hexagonal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>LuFe</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Steven DisselerNIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USAXuan LuoLaboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology, Pohang 790-784, KoreaBin GaoRutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USAYoon Seok OhDepartment of Physics, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, KoreaRongwei HuRutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USAYazhong WangRutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USADylan QuintanaCarnegie Mellon University, Pittsburgh, Pennsylvania 15213, USAAlexander ZhangNIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USAQ. HuangNIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USAJune W. LauNational Institute of Standards and Technology, Gaithersburg, Maryland 20899, USAR.L. PaulNIST Center for Neutron ResearchJ. W. LynnNIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USASang‐Wook CheongLaboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology, Pohang 790-784, KoreaWilliam RatcliffNIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

2015lv

ABI

Аннотация

The hexagonal phase of $\mathrm{LuFe}{\mathrm{O}}_{3}$ 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 $P{6}_{3}cm$ space group is found to be stable over a wide concentration range, ordering antiferromagnetically with N\'eel temperatures that smoothly increase following the ratio of $c$ to $a\phantom{\rule{0.16em}{0ex}}\phantom{\rule{0.16em}{0ex}}(c/a)$ 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 $\mathrm{LuFe}{\mathrm{O}}_{3}$ 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.

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Идентификаторы

DOI: 10.1103/physrevb.92.054435

Цитирования и источники

Цитирований: 2Использованных источников: 0

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