Reduction of magnetic hysteresis loss in La0.5Pr0.5Fe11.4Si1.6Hx hydrides with large magnetocaloric effects
Reduction of magnetic hysteresis loss in La0.5Pr0.5Fe11.4Si1.6Hx hydrides with large magnetocaloric effects
复制标题
具有大磁热效应的La0.5Pr0.5Fe11.4Si1.6Hx氢化物减少磁滞损耗
DOI:
10.1063/1.3374635
复制
发表时间:
2010-06
影响因子:
3.2
通讯作者:
中科院分区:
文献类型:
--
作者:
Magnetic properties and magnetocaloric effects (MCEs) have been investigated in hydrogenated La0.5Pr0.5Fe11.4Si1.6Hx (x=0, 0.9, and 1.6) compounds. It is found that the Curie temperature TC can be tuned from 189 to 317 K by adjusting hydrogen content from 0 to 1.6. It is attractive that both thermal and magnetic hysteresis are remarkably reduced because of the weakness of the itinerant-electron metamagnetic transition after hydrogenation, while the large magnetic entropy change is retained. The maximal hysteresis loss at TC decreases from 17.8 to 2.3 J/kg as x increases from 0 to 1.6. For the samples with x=0, 0.9, and 1.6, the maximal values of −ΔS are 26.3, 24.1, and 22.1 J/kg K at TC, with efficient refrigeration capacities of 463, 366, and 351 J/kg for a field change of 0–5 T, respectively. Large reversible MCE and small hysteresis with considerable value of refrigeration capacity indicate the potentiality of La0.5Pr0.5Fe11.4Si1.6Hx hydrides as a candidate magnetic refrigerant around room temperature.
登录
查看更多内容
DOI:
10.1088/1009-1963/11/7/318
发表时间:
2002-07
期刊:
Chin. Phys
影响因子:
--
作者:
Y.F. Chen;F. Wang;B.G. Shen;F.X. Hu;Z.H. Cheng;G.J. Wang;J.R. Sun
通讯作者:
J.R. Sun
影响因子:
3.2
作者:
Jun Shen;Yangxiang Li;Jian Zhang;B. Gao;F. Hu;Hong-wei Zhang;Yunzhong Chen;Chuanbing Rong;Jirong Sun
通讯作者:
Jun Shen;Yangxiang Li;Jian Zhang;B. Gao;F. Hu;Hong-wei Zhang;Yunzhong Chen;Chuanbing Rong;Jirong Sun
DOI:
10.1088/0953-8984/19/23/236230
发表时间:
2007-05
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
M. Balli;D. Fruchart;D. Gignoux
通讯作者:
M. Balli;D. Fruchart;D. Gignoux
DOI:
10.1088/1009-1963/16/12/049
发表时间:
2007-12
期刊:
Chinese Physics
影响因子:
--
作者:
Shen Jun;Gao Bo;Li-Qin Yan;Yang-Xian Li;Hong-wei Zhang;F. Hu;Jirong Sun
通讯作者:
Shen Jun;Gao Bo;Li-Qin Yan;Yang-Xian Li;Hong-wei Zhang;F. Hu;Jirong Sun
影响因子:
64.8
作者:
Tegus, O;Brück, E;de Boer, FR
通讯作者:
de Boer, FR