Magnetic properties and magnetocaloric effect of HoCo3B2 compound
Magnetic properties and magnetocaloric effect of HoCo3B2 compound
复制标题
HoCo3B2化合物的磁性能和磁热效应
DOI:
10.1063/1.5006505
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发表时间:
2018-01
期刊:
影响因子:
1.6
通讯作者:
B. G. Shen
中科院分区:
文献类型:
--
作者:
X. Q. Zheng;J. W. Xu.;H. Zhang;J. Y. Zhang;S. G. Wang;Y. Zhang;Y. Z. Xu;L. C. Wang;B. G. Shen
A sample of HoCo3B2 compound was synthesized, and the magnetic and MCE properties were investigated. Compound shows a change corresponding to R-R (R = rare earth) sublattice magnetic order transition and the transition temperature is determined to be 11.8 K (TC). The characteristic of Arrott plots with positive slope around TC was observed, indicating a second-order phase transition. Based on isothermal magnetization data, together with Maxwell’s relationship, the magnetic entropy change (-ΔSM) was calculated. The maximum -ΔSM reaches 7.8, 12.7 and 14.4 J/kg K for field range of 0-2 T, 0-5 T and 0-7 T, respectively. Accordingly, the value of RC (refrigerant capacity) is 99, 289 and 432 J/kg for above field ranges. The large MCE of HoCo3B2 compound indicates its potential application for magnetic refrigeration in low temperature range.
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