The magnetocaloric effect in the vicinity of compensation temperature of ferrimagnetic DyCo4Al alloy

The magnetocaloric effect in the vicinity of compensation temperature of ferrimagnetic DyCo4Al alloy
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亚铁磁DyCo4Al合金补偿温度附近的磁热效应

DOI:
10.1140/epjb/e2013-30823-y
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发表时间:
2013-04
期刊:
THE EUROPEAN PHYSICAL JOURNAL B
影响因子:
--
通讯作者:
Youwei Du
Youwei Du
中科院分区:
其他
文献类型:
--
作者:
Yuhua Hou;Jun He;Qingqi Cao;Youwei Du

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研究了亚铁磁 DyCo4Al 合金在补偿温度附近的磁性能和磁热性能。由于自旋偏移,观察到接近室温的补偿温度。在补偿温度两侧,磁化强度呈现突变。结果,该合金获得了两个连续的正负磁熵变峰。在很宽的制冷剂温度区间(~200 K)下,与正磁熵变峰相对应的可观的磁熵变值将使该合金适合在磁制冷机中使用。
The magnetic and magnetocaloric properties in ferrimagnetic DyCo4Al alloy are investigated in the vicinity of compensation temperature. A compensation temperature closed to room temperature is observed due to the spin-offset. On both sides of compensation temperature, the magnetization presents the abrupt change. As a consequence, two successive positive and negative magnetic entropy change peaks are obtained for this alloy. The appreciable magnetic entropy change values with a very wide refrigerant temperature interval (~200 K) corresponding to the positive magnetic entropy change peak would make this alloy suitable to be used in a magnetic refrigerator.
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发表时间: 2001-11-12
影响因子: 4
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期刊: PHYSICS LETTERS
影响因子: --
作者:
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通讯作者: BANERJEE, SK