Excellent magnetocaloric properties in RE2Cu2Cd (RE = Dy and Tm) compounds and its composite materials.
The magnetic properties and magnetocaloric effect (MCE) of ternary intermetallic RE2Cu2Cd (RE = Dy and Tm) compounds and its composite materials have been investigated in detail. Both compounds undergo a paramagnetic to ferromagnetic transition at its own Curie temperatures of TC~ 48.5 and 15 K for Dy2Cu2Cd and Tm2Cu2Cd, respectively, giving rise to the large reversible MCE. An additionally magnetic transition can be observed around 16 K for Dy2Cu2Cd compound. The maximum values of magnetic entropy change (-ΔSMmax) are estimated to be 17.0 and 20.8 J/kg K for Dy2Cu2Cd and Tm2Cu2Cd, for a magnetic field change of 0-70 kOe, respectively. A table-like MCE in a wide temperature range of 10-70 K and enhanced refrigerant capacity (RC) are achieved in the Dy2Cu2Cd - Tm2Cu2Cd composite materials. For a magnetic field change of 0-50 kOe, the maximum improvements of RC reach 32% and 153%, in comparison with that of individual compound Dy2Cu2Cd and Tm2Cu2Cd. The excellent MCE properties suggest the RE2Cu2Cd (RE = Dy and Tm) and its composite materials could be expected to have effective applications for low temperature magnetic refrigeration.
State Key Laboratory of Advanced Special Steels &Shanghai Key Laboratory of Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, 200072, China.
Yikun
Y
Zhang
State Key Laboratory of Advanced Special Steels &Shanghai Key Laboratory of Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, 200072, China.
Yang
Y
Yang
State Key Laboratory of Advanced Special Steels &Shanghai Key Laboratory of Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, 200072, China.
Xiao
X
Xu
State Key Laboratory of Advanced Special Steels &Shanghai Key Laboratory of Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, 200072, China.
Shuhua
S
Geng
State Key Laboratory of Advanced Special Steels &Shanghai Key Laboratory of Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, 200072, China.
Long
L
Hou
State Key Laboratory of Advanced Special Steels &Shanghai Key Laboratory of Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, 200072, China.
Xi
X
Li
State Key Laboratory of Advanced Special Steels &Shanghai Key Laboratory of Advanced Ferrometallurgy &School of Materials Science and Engineering, Shanghai University, 200072, China.
Zhongming
Z
Ren
Institute of Materials Physics, University of Münster, Wilhelm-Klemm-Straße 10, D-48149 Münster, Germany.
Gerhard
G
Wilde
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