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Structure and magnetic properties of Tm2Fe17-xGax compounds

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9 Author(s)
Shen, Bao-Gen ; State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China ; Cheng, Zhao‐hua ; Liang, Bing ; Gong, Hua‐yang
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Crystal-structure studies on Tm2Fe17-xGax (x=0, 1, 2, 3, 4, 5, 6, 7, and 8) compounds have shown that the prepared samples are single phase with the 2:17-type structure. Both the unit-cell volume and the saturation magnetization at 1.5 K decrease linearly with increasing Ga content. The Curie temperature is found to increase with increasing x; it goes through a maximum value of 485 K at about x=3 to lower values and then it rises again. The Tm2Fe17-xGax compounds exhibit a spin–reorientaiton transition at low temperature. X-ray diffraction measurements on magnetically aligned Tm2Fe17-xGax powders show that the compounds with x≤6 have the easy-plane type of magnetic anisotropy, whereas the compounds with x⋚7 exhibit the easy c-axis type of magnetic anisotropy at room temperature. © 1997 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:81 ,  Issue: 8 )