Magnetic-field-induced martensitic transformation in MnNiGa:Co alloys

L. Ma; H. W. Zhang; S. Y. Yu; Z. Y. Zhu; J. L. Chen; G. H. Wu; H. Y. Liu; J. P. Qu; Y. X. Li

doi:10.1063/1.2838343

Magnetic-field-induced martensitic transformation in MnNiGa:Co alloys

L. Ma, H. W. Zhang, S. Y. Yu, Z. Y. Zhu, J. L. Chen, G. H. Wu^*, H. Y. Liu, J. P. Qu, Y. X. Li

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

Abstract

With a high Curie temperature and low entropy change, the magnetic-field-induced martensitic transformation has been obtained in ferromagnetic shape memory alloys MnNiGa by doping a small amount of Co. Due to the ferromagnetic activation effect of Co, a large amount of antiferromagnetically aligned Mn moments are turned into ferromagnetic ordering, which is verified by our electronic structural calculation and experimental observation. Consequently, the magnetization rises up to 70 emug and the magnetization difference between two phases increases about ten times, resulting in a considerable dTdH of 4 KT and a well-defined reversed transformation induced by a magnetic field.

Original language	English (US)
Article number	032509
Journal	Applied Physics Letters
Volume	92
Issue number	3
DOIs	https://doi.org/10.1063/1.2838343
State	Published - 2008
Externally published	Yes

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Physics and Astronomy (miscellaneous)

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@article{e121bbd80af74afabe9861e89e61ec5e,

title = "Magnetic-field-induced martensitic transformation in MnNiGa:Co alloys",

abstract = "With a high Curie temperature and low entropy change, the magnetic-field-induced martensitic transformation has been obtained in ferromagnetic shape memory alloys MnNiGa by doping a small amount of Co. Due to the ferromagnetic activation effect of Co, a large amount of antiferromagnetically aligned Mn moments are turned into ferromagnetic ordering, which is verified by our electronic structural calculation and experimental observation. Consequently, the magnetization rises up to 70 emug and the magnetization difference between two phases increases about ten times, resulting in a considerable dTdH of 4 KT and a well-defined reversed transformation induced by a magnetic field.",

author = "L. Ma and Zhang, {H. W.} and Yu, {S. Y.} and Zhu, {Z. Y.} and Chen, {J. L.} and Wu, {G. H.} and Liu, {H. Y.} and Qu, {J. P.} and Li, {Y. X.}",

year = "2008",

doi = "10.1063/1.2838343",

language = "English (US)",

volume = "92",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "AMER INST PHYSICS",

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TY - JOUR

T1 - Magnetic-field-induced martensitic transformation in MnNiGa:Co alloys

AU - Ma, L.

AU - Zhang, H. W.

AU - Yu, S. Y.

AU - Zhu, Z. Y.

AU - Chen, J. L.

AU - Wu, G. H.

AU - Liu, H. Y.

AU - Qu, J. P.

AU - Li, Y. X.

PY - 2008

Y1 - 2008

N2 - With a high Curie temperature and low entropy change, the magnetic-field-induced martensitic transformation has been obtained in ferromagnetic shape memory alloys MnNiGa by doping a small amount of Co. Due to the ferromagnetic activation effect of Co, a large amount of antiferromagnetically aligned Mn moments are turned into ferromagnetic ordering, which is verified by our electronic structural calculation and experimental observation. Consequently, the magnetization rises up to 70 emug and the magnetization difference between two phases increases about ten times, resulting in a considerable dTdH of 4 KT and a well-defined reversed transformation induced by a magnetic field.

AB - With a high Curie temperature and low entropy change, the magnetic-field-induced martensitic transformation has been obtained in ferromagnetic shape memory alloys MnNiGa by doping a small amount of Co. Due to the ferromagnetic activation effect of Co, a large amount of antiferromagnetically aligned Mn moments are turned into ferromagnetic ordering, which is verified by our electronic structural calculation and experimental observation. Consequently, the magnetization rises up to 70 emug and the magnetization difference between two phases increases about ten times, resulting in a considerable dTdH of 4 KT and a well-defined reversed transformation induced by a magnetic field.

UR - http://www.scopus.com/inward/record.url?scp=38549164649&partnerID=8YFLogxK

U2 - 10.1063/1.2838343

DO - 10.1063/1.2838343

M3 - Article

AN - SCOPUS:38549164649

SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 3

M1 - 032509

ER -

Magnetic-field-induced martensitic transformation in MnNiGa:Co alloys

Abstract

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