Thermal behavior of ternary Sm2Fe17Nx magnets |
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| Authors: | Hong-Ling Li Koichi Takahashi Yusuke Ujihira Mariko Ishiwatari Kurima Kobayashi Takahiko Iriyama Tokuzo Konishi |
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| Affiliation: | (1) Research Center for Advanced Science and Technology, Komaba 4-6-1, Meguro-Ku, 153 Tokyo, Japan;(2) Faculty of Engineering, The University of Tokyo, Komaba 4-6-1, Meguro-Ku, 153 Tokyo, Japan;(3) 2-11-16, Yayoi, Bunkyo-ku, Tokyo;(4) Central Laboratory, Research Center for Advanced Science and Technology, 2-1 Sameshima, Fuji, Shizuoka, Japan;(5) Analytical Research Center, Asahi Chemical Industry Co., Ltd., 2-1 Sameshima, Fuji, Shizuoka, Japan;(6) Present address: Department of Pure and Applied Physics, Trinity College, 2 Dublin, Ireland |
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| Abstract: | The Mössbauer spectra of Sm2Fe17Nx, prepared by the nitrogenation of Sm2Fe17 powders in an ammonia and hydrogen atmosphere, were observed at elevated temperatures to shed light on the thermal behavior of nitrogen in the compounds Sm2Fe17Nx. It was found that there were large differences in thermal behavior between the starting Sm2Fe17, crystalline Sm2Fe17Nx (x≈1.7) and amorphous Sm2Fe17Nx(x～7). The thermal decomposition behavior of Sm2Fe17N3.2, developed as one of the most promising hard magnetic materials, was found to be different under different atmospheres. |
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| Keywords: | M?ssbauer spectra Sm2Fe17Nx |
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