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Tuning the Reversible Magnetocaloric Effect in Ni–Mn–In‐Based Alloys through Co and Cu Co‐Doping
Author(s) -
Li Zongbin,
Yang Jiajing,
Li Dong,
Li Zhenzhuang,
Yang Bo,
Yan Haile,
SánchezValdés César Fidel,
Llamazares José Luis Sánchez,
Zhang Yudong,
Esling Claude,
Zhao Xiang,
Zuo Liang
Publication year - 2019
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201800845
Subject(s) - magnetic refrigeration , materials science , diffusionless transformation , alloy , adiabatic process , doping , condensed matter physics , magnetic field , thermodynamics , atmospheric temperature range , magnetic hysteresis , magnetization , metallurgy , martensite , microstructure , optoelectronics , physics , quantum mechanics
Abstract The reversibility of the giant magnetocaloric effect (MCE) through the magnetic field–induced magnetostructural transformation in Ni–Mn–In‐based alloys is a key issue towards the potential magnetic refrigeration applications. In this work, Co and Cu are simultaneously doped to tune the reversible magnetocaloric properties associated with the magnetostructural transformation. Owing to the integration of large magnetization difference Δ M , suitable transformation entropy Δ S tr , and narrow thermal hysteresis Δ T hys in a Ni 46 Co 3 Mn 35 Cu 2 In 14 alloy, the reversible field–induced inverse martensitic transformation is realized in a wide temperature range of 30 K under the field of 5T, yielding a maximum reversible magnetic entropy change Δ S M max of 16.4 J kg −1 K −1 . Moreover, under a low field change of 1.5T, a large reversible adiabatic temperature variation Δ T ad of 2.5 K is also obtained, representing the highest value so far under the low field change of 1.5T in Ni–Mn‐based alloys. It is demonstrated that multi‐component alloying by combining the effects of appropriate substitutional elements is an effective way to develop high‐performance magnetocaloric materials.