| Effects of Fe－Fe bond length change in NaZn13-type intermetallic compounds on magnetic properties and magnetic entropy change |
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| 引用本文： | 王光军,胡凤霞,王芳,沈保根.Effects of Fe－Fe bond length change in NaZn13-type intermetallic compounds on magnetic properties and magnetic entropy change[J].中国物理 B,2004,13(4):546-551. |
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| 作者姓名： | 王光军 胡凤霞 王芳 沈保根 |
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| 作者单位： | State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | Project supported by the State Key Development Programme of Basic Research of China (Grant No G 1998061303), by the National High Technology Development Programme of China (Grant No 2002A A324010), and by the National Natural Science Foundation of China (Grant No 10174094). |
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| 摘 要： | In this paper the effects of Fe－Fe bond length change on magnetic properties and magnetic entropy change have been investigated on LaFe_{12.4-x}Si_xCo_{0.6} and LaFe_{12.3-x}Al_xCo_{0.7} intermetallic compounds. According to the analyses of Fe－Fe bond length change, the variation of Curie temperature and the unusual magnetic phase transition which results in the large magnetic entropy change were explained. The effects of the substitution of Co and Si for Fe on magnetic entropy change and field-induced itinerant-electron metamagnetic transition in LaFe_{12.4-x}Si_xCo_{0.6} compounds were also studied and the considerable magnetic entropy change has been achieved.
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| 关 键 词： | Fe－Fe bond length magnetic phase transition magnetic entropy change |
| 收稿时间： | 2003-09-24 |
Effects of Fe－Fe bond length change in NaZn13-type intermetallic compounds on magnetic properties and magnetic entropy change |
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| Wang Guang-Jun,Hu Feng-Xi,Wang Fang and Shen Bao-Gen.Effects of Fe－Fe bond length change in NaZn13-type intermetallic compounds on magnetic properties and magnetic entropy change[J].Chinese Physics B,2004,13(4):546-551. |
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| Authors: | Wang Guang-Jun Hu Feng-Xi Wang Fang and Shen Bao-Gen |
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| Institution: | State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | In this paper the effects of Fe－Fe bond length change on magnetic properties and magnetic entropy change have been investigated on LaFe_{12.4-x}Si_xCo_{0.6} and LaFe_{12.3-x}Al_xCo_{0.7} intermetallic compounds. According to the analyses of Fe－Fe bond length change, the variation of Curie temperature and the unusual magnetic phase transition which results in the large magnetic entropy change were explained. The effects of the substitution of Co and Si for Fe on magnetic entropy change and field-induced itinerant-electron metamagnetic transition in LaFe_{12.4-x}Si_xCo_{0.6} compounds were also studied and the considerable magnetic entropy change has been achieved. |
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| Keywords: | Fe－Fe bond length magnetic phase transition magnetic entropy change |
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