| Electron Concentration Dependence of Transformation Temperature in Different NiMnGa Alloys with First Order Magnetic Transition |
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| 作者姓名： | Duan Jingfang Zhang Zeyu Wang Dong Long Yi~* Ye Rongchang Chang Yongqin |
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| 作者单位： | School of Materials Science and Engineering，University of Science and Technology Beijing，Beijing 100083，China |
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| 摘 要： | Electron Concentration Dependence of Transformation Temperature in Different NiMnGa Alloys with First Order Magnetic Transition
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Electron Concentration Dependence of Transformation Temperature in Different NiMnGa Alloys with First Order Magnetic Transition |
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| Duan Jingfang,Zhang Zeyu,Wang Dong,Long Yi*,Ye Rongchang,Chang Yongqin.Electron Concentration Dependence of Transformation Temperature in Different NiMnGa Alloys with First Order Magnetic Transition[J].Journal of Rare Earths,2005(4). |
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| Authors: | Duan Jingfang Zhang Zeyu Wang Dong Long Yi Ye Rongchang Chang Yongqin |
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| Affiliation: | Duan Jingfang,Zhang Zeyu,Wang Dong,Long Yi~*,Ye Rongchang,Chang Yongqin |
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| Abstract: | Composition and electron concentration dependence of transformation temperature in Ni_(2 x y)Mn_(1-x)Ga_(1-y), Ni_(2 x)Mn_(1-x)Ga alloys with first order magnetic transition were studied. For Ni_(2 x y)Mn_(1-x)Ga_(1-y) alloys, martensitic transformation temperature T_M increases and Curie temperature T_C decreases with the increase of electron concentration e/a, they intercept at e/a=7.68. T_M and T_C decrease when continue to increase electron concentration. While for Ni_(2 x)Mn_(1-x)Ga alloys, they cross at e/a=7.635. Before their crossing, the change tendency with e/a is the same as Ni_(2 x y)Mn_(1-x)Ga_(1-y) alloys; after their crossing, both T_M and T_C increase slowly. The different relations between T_M and T_C and e/a within two NiMnGa alloys show that T_M and T_C depend not only on e/a, but also on composition. |
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| Keywords: | NiMnGa alloys electron concentration (e/a) martensitic transformation magnetic transition rare earths |
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