Abstract
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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CITATION STYLE
Zheng, X. Q., Xu, J. W., Zhang, H., Zhang, J. Y., Wang, S. G., Zhang, Y., … Shen, B. G. (2018). Magnetic properties and magnetocaloric effect of HoCo3B2 compound. AIP Advances, 8(5). https://doi.org/10.1063/1.5006505
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