Relation between ferroelectric and antiferromagnetic order in RMn2O5
作者： Yukio Noda , Hiroyuki Kimura , Youichi Kamada , Toshihiro Osawa , Yosikazu Fukuda
DOI: 10.1016/J.PHYSB.2006.05.179
关键词: Single crystal 、 Diffraction 、 Phase transition 、 Nuclear magnetic resonance 、 Ferroelectricity 、 Magnetic structure 、 Condensed matter physics 、 Antiferromagnetism 、 Neutron diffraction 、 Diffractometer 、 Physics
摘要: Abstract RMn 2 O 5 ( R = Y and rare earth) shows successive magnetic ferroelectric phase transitions at about 45, 40, 39, 20 10 K. We have reinvestigated the structure of YMn commensurate T 25 K ) using a single crystal four-circle diffractometer in order to discuss mechanism magnetoelectric interaction origin ferroelectricity. also observed lattice modulation vectors q L compare propagation M by synchrotron X-ray diffraction. Improved data are compared with theory recently proposed.
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