Magnetic properties and magnetocaloric effect of HoCo3B2 compound

被引：10

作者：

Zheng, X. Q. ^{[1
]}

Xu, J. W. ^{[1
]}

Zhang, H. ^{[1
]}

Zhang, J. Y. ^{[1
]}

Wang, S. G. ^{[1
]}

Zhang, Y. ^{[2
,3
]}

Xu, Z. Y. ^{[4
]}

Wang, L. C. ^{[5
]}

Shen, B. G. ^{[2
,3
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100190, Peoples R China

[4] Natl Inst Metrol, Beijing 100029, Peoples R China

[5] Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China

来源：

AIP ADVANCES | 2018年 / 8卷 / 05期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

METAMAGNETIC TRANSITION; DYCO3B2; COMPOUND; ENTROPY CHANGE; RCO3B2; SUSCEPTIBILITY; GD-5(SI2GE2); SYSTEM; GD; DY;

D O I：

10.1063/1.5006505

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 (T-C). The characteristic of Arrott plots with positive slope around T-C was observed, indicating a second-order phase transition. Based on isothermal magnetization data, together with Maxwell's relationship, the magnetic entropy change (-Delta S-M) was calculated. The maximum -Delta S-M 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. (C) 2018 Author(s).

引用

页数：5

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