Reversible low-field magnetocaloric effect in Ni-Mn-In-based Heusler alloys

Journal article (2019)

Authors

J. Liu RST/Fundamental Aspects of Materials and Energy - AS , Nanjing University of Science and Technology, Nanjing, China
X. You RST/Fundamental Aspects of Materials and Energy - AS
B. Huang RST/Fundamental Aspects of Materials and Energy - AS
I. Batashev RST/Fundamental Aspects of Materials and Energy - AS
M. Maschek RST/Fundamental Aspects of Materials and Energy - AS
Yuanyuan Gong Nanjing University of Science and Technology, Nanjing, China
Xuefei Miao Nanjing University of Science and Technology, Nanjing, China
Feng Xu Nanjing University of Science and Technology, Nanjing, China
N.H. van Dijk RST/Fundamental Aspects of Materials and Energy - AS
E.H. Brück RST/Fundamental Aspects of Materials and Energy - AS
Research Group
RST/Fundamental Aspects of Materials and Energy (AS) (TU Delft)
Copyright: © 2019 J. Liu, X. You, B. Huang, I. Batashev, M. Maschek, Yuanyuan Gong, Xuefei Miao, Feng Xu, N.H. van Dijk, E.H. Brück
DOI: https://doi.org/10.1103/PhysRevMaterials.3.084409
More Info
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Published Date

2019

Language

English

Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Fundamental Aspects of Materials and Energy

Abstract

Ni-Mn-X (X = In, Sn, and Sb) based Heusler alloys show a strong potential for magnetic refrigeration owing to their large magnetocaloric effect (MCE) associated with first-order magnetostructural transition. However, the irreversibility of the MCE under low field change of 0–1 T directly hinders its application as an efficient magnetic coolant. In this work, we systematically investigate thermal and magnetic properties, crystalline structure and magnetocaloric performance in Ni51−xMn33.4In15.6Vx alloys. With the introduction of V, a stable magnetostructural transition near room temperature is observed between martensite and austenite. An extremely small hysteresis of 2.3 K is achieved for the composition x = 0.3. Due to this optimization, the magneticfield induced structural transition is partially reversible under 0–1 T cycles, resulting in a reversible MCE.
Both magnetic and calorimetric measurements consistently show that the largest value for the reversible magnetic entropy change can reach about 5.1 J kg−1 K−1 in a field change of 0–1 T. A considerable and reversible adiabatic temperature change of −1.2 K by the direct measurement is also observed under a field change of 0–1.1 T. Furthermore, the origin of this small hysteresis is discussed. Based on the lattice parameters, the transformation stretch tensor is calculated, which indicates an improved geometric compatibility between the two phases. Our work greatly improves the MCE performance of Ni-Mn-X-based alloys and make them suitable as realistic magnetic refrigeration materials.