Magnetostructural coupling and magnetocaloric effect in Ni-Mn-In

B. Li; W. J. Ren; Q. Zhang; X. K. Lv; X. G. Liu; H. Meng; J. Li; D. Li; Z. D. Zhang

doi:10.1063/1.3257381

Magnetostructural coupling and magnetocaloric effect in Ni-Mn-In

B. Li, W. J. Ren, Q. Zhang, X. K. Lv, X. G. Liu, H. Meng, J. Li, D. Li, Z. D. Zhang

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Abstract

Magnetic-field-induced martensitic phase transition and the concomitant change of volume are investigated in Ni-Mn-In alloy. A well-defined linear relationship is found between the quantity characterizing magnetic degree of freedom and the thermal expansion on behalf of structural degree of freedom, which demonstrates the magnetostructural coupling. Within the exchange-inversion model, such a linear relationship is theoretically derived and the magnetostructural correlation is elucidated. The lattice-entropy change contributes about one half of the total entropy change, suggesting that the magnetostructural coupling plays an important role in the magnetocaloric effect of Ni-Mn-In alloy.

Original language	English
Article number	172506
Journal	Applied Physics Letters
Volume	95
Issue number	17
DOIs	https://doi.org/10.1063/1.3257381
State	Published - 2009
Externally published	Yes

Funding

This work has been supported by the National Natural Science Foundation of China (Grant No. 50831006) and by the National Basic Research Program (Grant No. 2010CB934603) of China, Ministry of Science and Technology China.

Funders	Funder number
Ministry of Science and Technology China
National Natural Science Foundation of China	50831006
National Basic Research Program of China (973 Program)	2010CB934603

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abstract = "Magnetic-field-induced martensitic phase transition and the concomitant change of volume are investigated in Ni-Mn-In alloy. A well-defined linear relationship is found between the quantity characterizing magnetic degree of freedom and the thermal expansion on behalf of structural degree of freedom, which demonstrates the magnetostructural coupling. Within the exchange-inversion model, such a linear relationship is theoretically derived and the magnetostructural correlation is elucidated. The lattice-entropy change contributes about one half of the total entropy change, suggesting that the magnetostructural coupling plays an important role in the magnetocaloric effect of Ni-Mn-In alloy.",

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AU - Li, B.

AU - Ren, W. J.

AU - Zhang, Q.

AU - Lv, X. K.

AU - Liu, X. G.

AU - Meng, H.

AU - Li, J.

AU - Li, D.

AU - Zhang, Z. D.

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AB - Magnetic-field-induced martensitic phase transition and the concomitant change of volume are investigated in Ni-Mn-In alloy. A well-defined linear relationship is found between the quantity characterizing magnetic degree of freedom and the thermal expansion on behalf of structural degree of freedom, which demonstrates the magnetostructural coupling. Within the exchange-inversion model, such a linear relationship is theoretically derived and the magnetostructural correlation is elucidated. The lattice-entropy change contributes about one half of the total entropy change, suggesting that the magnetostructural coupling plays an important role in the magnetocaloric effect of Ni-Mn-In alloy.

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Magnetostructural coupling and magnetocaloric effect in Ni-Mn-In

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