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Chin. Phys. B, 2013, Vol. 22(8): 088105    DOI: 10.1088/1674-1056/22/8/088105

Magnetostructural transition in NiCuCoMnGa alloys

Li Pan-Pan, Wang Jing-Min, Jiang Cheng-Bao
Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191, China
Abstract  The effects of the addition of Co on the martensitic transformation and Curie transition temperatures of polycrystalline Ni46-xCu4CoxMn33.5Ga16.5 (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 (TCA) 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      Published:  27 June 2013
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:;

Cite this article: 

Li Pan-Pan, Wang Jing-Min, Jiang Cheng-Bao Magnetostructural transition in NiCuCoMnGa alloys 2013 Chin. Phys. B 22 088105

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