Hydrogen absorption property and magnetism of SmFeAl and its hydrides |
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| Authors: | Yuntao Wang Huaiyu Shao Xingguo Li Lefu Zhang Seiki Takahashi |
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| Institution: | 1. The State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China;2. Faculty of Engineering, Department of Materials Science and Engineering, Iwate University, 4-3-5 Ueda, Morioka, 020-8551, Japan |
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| Abstract: | Magnetic properties of SmFeAl and its hydrides synthesized at 298–673 K under 40 bar hydrogen pressure were investigated by a superconducting quantum interference device (SQUID) from 4.2 to 300 K. SmFeAl and its hydrides have a mictomagnetic transition during the field-cooled process. In both SmFeAl and its hydrides, a shifted magnetic hysteresis cycle towards positive magnetization was observed. But when SmFeAlHx decomposes completely into SmHx and Fe–Al alloy, this special transition disappears. |
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| Keywords: | SmFeAl compound Hydrogen absorption Hydrides Mictomagnetism Field-induced magnetic transition |
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