Room-Temperature Multiferroic Hexagonal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>LuFeO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>Films
Wenbin WangDepartment of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USAJun ZhaoDepartment of Physics, University of California, Berkeley, California 94720, USAWenbo WangDepartment of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USAZheng GaiCenter for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USANina BalkeMaterials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USAMiaofang ChiMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAHo Nyung LeeMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAWei TianQuantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USALeyi ZhuMaterials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USAXuemei ChengDepartment of Physics, Bryn Mawr College, Bryn Mawr, Pennsylvania 19010, USAD. J. KeavneyAdvanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USAJieyu YiDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996, USAThomas Z. WardMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAPaul C. SnijdersMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAHans M. ChristenMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAWeida WuDepartment of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USAJian ShenDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996, USA and State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, ChinaXiaoshan XuMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
2013lv
ABI
Аннотация
The crystal and magnetic structures of single-crystalline hexagonal LuFeO(3) 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 LuFeO(3) films are room-temperature multiferroics.
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