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SUN Kai 1, CHEN Dong feng 1, GOU Cheng 1, YE Chun tang 1, SHEN Bao gen 2, ZHANG Jun xian 2, CHENG Zhao hua 2, YAN Qi wei 2, ZHANG Pan lin 2 (1. China Institute of Atomic Energy, P.O. Box 275 30, Beijing 102413, China; 2. Institute of Physics, Chinese Academy of Sciences, P.O.Box. Neutron Diffraction Study of Er_2Fe_(15)Al_2 and Er_2Fe_(12)Al_5[J]. Atomic Energy Science and Technology, 2001, 35(1): 41-41. DOI: 10.7538/yzk.2001.35.01.0041
Citation: SUN Kai 1, CHEN Dong feng 1, GOU Cheng 1, YE Chun tang 1, SHEN Bao gen 2, ZHANG Jun xian 2, CHENG Zhao hua 2, YAN Qi wei 2, ZHANG Pan lin 2 (1. China Institute of Atomic Energy, P.O. Box 275 30, Beijing 102413, China; 2. Institute of Physics, Chinese Academy of Sciences, P.O.Box. Neutron Diffraction Study of Er_2Fe_(15)Al_2 and Er_2Fe_(12)Al_5[J]. Atomic Energy Science and Technology, 2001, 35(1): 41-41. DOI: 10.7538/yzk.2001.35.01.0041
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    • Abstract
  • The crystallographic and magnetic structures of Er 2Fe 15 Al 2 and Er 2Fe 12 Al 5 have been refined by Rietveld analysis of neutron diffraction data at room temperature. The refined results indicate that Er 2Fe 15 Al 2 compound has Th 2Ni 17 type (space group:P6 3/mmc) hexagonal structure and Er 2Fe 12 Al 5 has Th 2Zn 17 type (space group: R 3 m) rhombohedral structure. The Al atoms prefer to 12j and 12k sites in Er 2Fe 15 Al 2, and prefer to 18f, 18h and 6c sites in Er 2Fe 12 Al 5. The moments lie in the plane perpendicular to the six fold axis and exhibit planar magnetic anisotropy in both samples.
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