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arXiv 0712.1999cond-mat.str-elcond-mat.mtrl-sci
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Gd4Co3的大磁热效应

Large magnetocaloric effect in Gd4Co3

Niharika Mohapatra, Kartik K Iyer, E. V. Sampathkumaran

摘要:

由于磁场的等温变化,Gd_4Co_3在300 K以下有较大的熵变(Δ S),在TC= 220 K附近达到峰值,其制冷量高于Gd。值得注意的是,等温磁化是非滞后的-一个重要的标准,磁制冷没有损失。Δ S的行为也进行了比较的磁阻。

英文摘要:

We report a large entropy change (DeltaS) below 300 K, peaking near TC= 220 K, due to isothermal change of magnetic field, for Gd4Co3, with a refrigeration capacity higher than that of Gd. Notably, the isothermal magnetization is nonhysteretic - an important criterion for magnetic refrigeration without loss. DeltaS behavior is also compared with that of magnetoresistance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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