Magnetostructural transition in NiCuCoMnGa alloys

doi:10.1088/1674-1056/22/8/088105

Abstract The effects of the addition of Co on the martensitic transformation and Curie transition temperatures of polycrystalline Ni_46-xCu₄Co_xMn_33.5Ga_16.5 (x=0, 1, 3, 5) alloys are investigated. An abrupt decrease in the martensitic transformation temperature and an obvious increase in the Curie transition temperature of austenite (T_C^A) are observed when Co is doped in the NiCuMnGa alloy. As a result, the composition range for obtaining the magnetostructural transition is extended. Furthermore, the effect of a strong magnetic field on the magnetostructural transition is analyzed. This study offers a possible method to extend the composition range for obtaining magnetostructural transition in Heusler alloys.

Keywords: magnetostructural transition Heusler alloys NiCuCoMnGa

Received: 28 October 2012
Revised: 21 December 2012
Accepted manuscript online:

PACS:	81.30.Kf	(Martensitic transformations)
	61.66.Dk	(Alloys )

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50925101, 512210163, and 51001004), the National Basic Research Program of China (973 Program) (Grant No. 2012CB619404), the Natural Science Foundation of Beijing (Grant No. 2132026), and the Fundamental Research Funds for Central 212 Universities (Grant No. YWF-13-T-RSC-025).

Corresponding Authors: Wang Jing-Min, Jiang Cheng-Bao
E-mail: jingmin@buaa.edu.cn; jiangcb@buaa.edu.cn

Cite this article:

Li Pan-Pan (李盼盼), Wang Jing-Min (王敬民), Jiang Cheng-Bao (蒋成保) Magnetostructural transition in NiCuCoMnGa alloys 2013 Chin. Phys. B 22 088105

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Magnetostructural transition in NiCuCoMnGa alloys

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