Phase-Transition and Magnetic Moment of the Gd3＋ Ion in the Gd2Fe17 Compound  

作　　者：郝延明 傅斌 周严 赵淼 

机构地区：[1]Department of Physics, College of Science, Tianjin University of Science and Technology, Tianjin 300222 [2]School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 [3]School of Science, Tianjin University of Commerce, Tianjin 30013 [4]National Center for Nanoscience and Technology (NCNST), Belting 100190

出　　处：《Chinese Physics Letters》2009年第7期290-293,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 50871074, and Tianjin University of Science and Technology under Grant No 0200153.

摘　　要：The structure and magnetic phase transitions of the Gd2Fe17 compound are investigated by using a differential thermal/thermogravimetric analyzer, x-ray diffraction, and magnetization measurements. The result shows that there are two phase structures for the Gd2Fe17 compound： the hexagonal Th2Nilr-type structure at high temperatures （above 1243℃）, and the rhombohedral Th2Zn17-type structure, respectively. A method to measure the magnetic moments of the Gd-sublattice and the Fe-sublattice in the Gd2Fe17 compound is presented. The moments of the Gd-sublattice and the Fe-sublattice in the Gd2Fe17 compound from 77 to 500 K are measured in this way with a vibrating sample magnetometer. A detailed discussion is presented.The structure and magnetic phase transitions of the Gd2Fe17 compound are investigated by using a differential thermal/thermogravimetric analyzer, x-ray diffraction, and magnetization measurements. The result shows that there are two phase structures for the Gd2Fe17 compound： the hexagonal Th2Nilr-type structure at high temperatures （above 1243℃）, and the rhombohedral Th2Zn17-type structure, respectively. A method to measure the magnetic moments of the Gd-sublattice and the Fe-sublattice in the Gd2Fe17 compound is presented. The moments of the Gd-sublattice and the Fe-sublattice in the Gd2Fe17 compound from 77 to 500 K are measured in this way with a vibrating sample magnetometer. A detailed discussion is presented.

关 键 词：Condensed matter: electrical magnetic and optical Condensed matter: structural mechanical & thermal 

分 类 号：O614.339[理学—无机化学] TM27[理学—化学]