| Magnetic Entropy Change of （Gd1-xREx）5Si4（RE = Dy, Ho） Alloys |
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| 引用本文： | WU Wei Feng Zai Guo Lijun. Magnetic Entropy Change of （Gd1-xREx）5Si4（RE = Dy, Ho） Alloys[J]. 中国稀土学报(英文版), 2005, 23(4): 441-441 |
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| 作者姓名： | WU Wei Feng Zai Guo Lijun |
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| 作者单位： | School of Materials Science and Engineering，Xihua University，Chengdu 610039，China |
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| 摘 要： | Magnetic Entropy Change of (Gd_(1-x)RE_x)_5Si_4(RE=Dy, Ho) Alloys
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| 关 键 词： | 磁熵 稀土 磁致冷却材料 磁热效应 （Gd1-xREx）5Si4 |
Magnetic Entropy Change of (Gd_(1-x)RE_x)_5Si_4(RE=Dy, Ho) Alloys |
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| WU;Wei;Feng;Zai;Guo;Lijun. Magnetic Entropy Change of (Gd_(1-x)RE_x)_5Si_4(RE=Dy, Ho) Alloys[J]. Journal of Rare Earths, 2005, 23(4): 441-441 |
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| Authors: | WU Wei Feng Zai Guo Lijun |
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| Abstract: | The magnetic properties, including Curie points, magnetic phases transition and magnetic entropy changes, of (Gd_(1-x)RE_x)_5Si_4(RE=Dy, Ho) alloys were systematically studied. The results show that the alloys keep the Sm_5Ge_4 orthorhombic structures as Gd_5Si_4, and the Curie points of the alloys almost linearly decrease with increasing content of x, so that the Curie points can be adjusted by adding different concentrations of Dy or Ho in the alloys. The magnetic properties of these alloys obey second order transition. The costs of these alloys are cheaper than that of Gd-Si-Ge alloys because there is not expensive element such as Ge. The large magnetic entropy change at low fields (<2 T) and wide temperature ranges of these alloys suggest that they are suitable to be the gradient function materials and candidates of magnetic refrigerants at room temperature with low fields. |
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| Keywords: | magnetic refrigeration materials magnetocaloric effect magnetic entropy change rare earths |
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