Author:
Jiang Wen-Hao,Mo Zhao-Jun,Luo Jia-Wei,Zheng Zhe-Xuan,Lu Qiu-Jie,Liu Guo-Dong,Shen Jun,Li Lan
Abstract
The magnetic properties and magnetocaloric effect (MCE) of EuTi1 − x
Nb
x
O3 (x = 0.05, 0.1, 0.15, and 0.2) compounds are investigated. Owing to electronic doping, parts of Ti ions are replaced by Nb ions, the lattice constant increases and a small number of Ti4+ (3d0) ions change into Ti3+ (3d1). It is the ferromagnetism state that is dominant in the derivative balance. The values of the maximum magnetic entropy change (
−
Δ
S
M
max
) are 10.3 J/kg · K, 9.6 J/kg · K, 13.1 J/kg · K, and 11.9 J/kg · K for EuTi1 − x
Nb
x
O3 (x = 0.05, 0.1, 0.15, and 0.2) compounds and the values of refrigeration capacity are 36, 33, 86, and 80 J/kg as magnetic field changes in a range of 0 T–1 T. The EuTi1 − x
Nb
x
O3 (x = 0.05, 0.1, 0.15, and 0.2) compounds with giant reversible MCE are considered as a good candidate for magnetic refrigerant working at low-temperature and low-field.
Subject
General Physics and Astronomy
Cited by
5 articles.
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