Martensitic transformation and magnetocaloric effect in Ni-Co-Mn-Sn Heusler alloy | Zendy

Zhang Hao-Lei | Zendy; Zhe Li | Zendy; Qiao Yan-fei | Zendy; Cao ShiXun | Zendy; Jincang Zhang | Zendy; Chao Jing | Zendy

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Martensitic transformation and magnetocaloric effect in Ni-Co-Mn-Sn Heusler alloy

Author(s) -

Zhang Hao-Lei,

Zhe Li,

Qiao Yan-fei,

Cao ShiXun,

Jincang Zhang,

Chao Jing

Publication year - 2009

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.58.7857

Subject(s) - magnetic refrigeration , materials science , condensed matter physics , austenite , magnetic shape memory alloy , diffusionless transformation , alloy , ferromagnetism , magnetism , magnetic field , magnetization , magnetic domain , metallurgy , microstructure , physics , quantum mechanics

The crystal structure and phase transition in Ni50-xCoxMn38Sn12x=1, 2, 4, 6, 8 Heusle alloys were investigated by means of structure analysis and magnetism measurements. The results show that the doping of the Co atom affects neither the original structure of Ni-Mn-Sn Heusler alloys, nor the ferromagnetic interaction strengthens in the austenitic state. Furthermore, based on Maxwell equation, the magnetic entropy change ΔSM of three samples x=2, 4, 6 has been calculated. A large magnetic entropy change of 37.09 J/kg K at about 320 K for a magnetic field change of 50 kOe is obtained in Ni48Co2Mn38Sn12 alloy.

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