Author:
Sun Hao,Wang Junfeng,Tian Lu,Gong Jianjian,Mo Zhaojun,Shen Jun,Shen Baogen
Abstract
We investigate the structural, magnetic, and magnetocaloric effects (MCE) of Tm1−x
Er
x
CuAl (x = 0.25, 0.5, and 0.75) compounds. The compounds undergo a second-order phase transition originating from the ferromagnetic to paramagnetic transition around 3.2 K, 5 K, and 6 K, respectively. The maximum magnetic entropy changes (
−
Δ
S
M
max
) of Tm1−x
Er
x
CuAl (x = 0.25, 0.5, and 0.75) are 17.1 J⋅kg−1⋅K−1, 18.1 J⋅kg−1⋅K−1, and 17.5 J⋅kg−1⋅K−1 under the magnetic field in the range of 0–2 T, with the corresponding refrigerant capacity (RC) values of 131 J⋅kg−1, 136 J⋅kg−1, and 126 J⋅kg−1, respectively. The increase of
−
Δ
S
M
max
for Tm0.5Er0.5CuAl may be relevant to the change of magnetic moment distribution of Er and stress coming from element substitution. This work provides several compounds that can enrich the family of giant MCE materials in the cryogenic region.
Subject
General Physics and Astronomy
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献