Enhancement of magnetocaloric effect in mischmetal doped La-Fe-Si alloys
Enhancement of magnetocaloric effect in mischmetal doped La-Fe-Si alloys
复制标题
混合稀土掺杂 La-Fe-Si 合金中磁热效应的增强
DOI:
10.1063/1.5006089
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发表时间:
2018-05
期刊:
影响因子:
1.6
通讯作者:
Zhang Yan
中科院分区:
文献类型:
--
作者:
Wang Gaofeng;Zhao Zengru;Zhang Xuefeng;Ma Qiang;Li Yongfeng;Liu Yanli;Mu Lijuan;Zhang Yan
The influence of partial substitution of mischmetal on the structure, Curie temperature and magnetocaloric effect has been investigated in La1-xMxFe11.5Si1.5 alloys. X-ray diffraction patterns indicate the alloys crystallize mainly in NaZn13-type cubic structure and the amount of secondary α-Fe phase obviously reduces in the mischmetal doped alloys. As the content of mischmetal increases, the Curie temperature is reduced from 198.1 K for x = 0 to 184.2 K for x = 0.3 and the thermal hysteresis is enlarged from 3.5 K for x = 0 to 8.2 K for x = 0.3. Upon a field change from 0 to 3 T, the obtained maximum isothermal entropy change values are 17.2, 19.8, 37.8 and 47.9 J/kgK for x = 0, 0.1, 0.2 and 0.3, respectively. The entropy changes due to the latent heat of first-order transitions are estimated to be 11.3, 14.7, 18.5 and 23.4 J/kgK for x = 0, 0.1, 0.2 and 0.3, respectively. The enhancement of giant magnetocaloric MCE in La1-xMxFe11.5Si1.5 alloys originates from the strengthened itinerant electron metamagne...
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影响因子:
4
作者:
Wada, H;Tanabe, Y
通讯作者:
Tanabe, Y
影响因子:
64.8
作者:
Tegus, O;Brück, E;de Boer, FR
通讯作者:
de Boer, FR
影响因子:
1.2
作者:
S. Fujieda;A. Fujita;K. Fukamichi
通讯作者:
S. Fujieda;A. Fujita;K. Fukamichi
影响因子:
2.1
作者:
Piotr Gębara;J. Marcin;I. Škorvánek
通讯作者:
Piotr Gębara;J. Marcin;I. Škorvánek
影响因子:
2.7
作者:
G. Wang;L. Song;Fei Li;Z. Ou;O. Tegus;E. Brück;K. Buschow
通讯作者:
G. Wang;L. Song;Fei Li;Z. Ou;O. Tegus;E. Brück;K. Buschow