Singh, Sanjay ; Bhardwaj, S. ; Panda, A. K. ; Ahire, V. K. ; Mitra, Amitava ; Awasthi, A. M. ; Barman, S. R. (2009) Structural, thermal and magnetic properties of Ga excess Ni-Mn-Ga Materials Science Forum, 635 . pp. 43-47. ISSN 0255-5476
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Official URL: http://www.scientific.net/MSF.635.43
Related URL: http://dx.doi.org/10.4028/www.scientific.net/MSF.635.43
Abstract
The martensitic transition and the ferro- to paramagnetic transition have been studied in a series of Ga excess Ni-Mn-Ga specimens [Ni2-xMnGa1+x (0.4= x= 0.9)] by differential scanning calorimetry and magnetization measurements. The martensitic transition exhibits a hysteresis whose width is similar to Ni2MnGa, indicating that the transition is thermoelastic. The latent heat of transformation is comparable with other Ni-Mn-Ga alloys. A substantial increase in the martensitic transition temperature is observed due to Ga doping. Interestingly, the x-ray diffraction pattern of all the compositions studied show a modulated martensitic structure in the martensitic phase.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Trans Tech Publications Inc. |
| ID Code: | 93093 |
| Deposited On: | 12 Jun 2012 05:44 |
| Last Modified: | 12 Jun 2012 08:12 |
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