| Intrinsic magnetocaloric effect at a first-order magnetic transition |
| B. Li; H. Meng; W. J. Ren; Z. D. Zhang
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| 2012
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| 发表期刊 | Epl
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| ISSN | 0295-5075
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| 卷号 | 97期号:5 |
| 摘要 | A four-parameter method has been developed to determine the magnetocaloric effect associated with a first-order magnetic transition. In order to prevent misevaluation due to the intrinsically irreversible features, the transition is mimicked by a reversible process. The magnetization and the isothermal magnetic-entropy change are shown to be dependent on only four intrinsic parameters, which can be easily obtained in experiments. A new method to calculate the magnetic-entropy change is derived, which is referred to as Landau approach. The four-parameter method as well as the Landau approach are demonstrated on the famous magnetocaloric material LaFe11.5Si1.5. They benefit from the experimental investigation of MCE very much and make the characterization of MCE much easier. This may be helpful for the search of better magnetocaloric materials. Copyright (C) EPLA, 2012 |
| 部门归属 | [li, bing] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;li, b (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;wjren@imr.ac.cn
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| 关键词 | Adiabatic Temperature-change
Ni43mn46sn11 Compounds
Phase-transitions
Entropy Change
Gd5si2ge2
La0.8nd0.2fe11.5si1.5
Lafe11.6si1.4
Vicinity
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| URL | 查看原文
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/60043
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
B. Li,H. Meng,W. J. Ren,et al. Intrinsic magnetocaloric effect at a first-order magnetic transition[J]. Epl,2012,97(5).
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| APA |
B. Li,H. Meng,W. J. Ren,&Z. D. Zhang.(2012).Intrinsic magnetocaloric effect at a first-order magnetic transition.Epl,97(5).
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| MLA |
B. Li,et al."Intrinsic magnetocaloric effect at a first-order magnetic transition".Epl 97.5(2012).
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