Singh, Sanjay and Bhardwaj, S and Panda, A K and Ahire, V and Mitra, A and Awasthi, A M and Barman, S R (2010) Structural, Thermal and Magnetic Properties of Ga Excess Ni-Mn-Ga. Materials Science Forum, 635 . pp. 43-47.
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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 |
|---|---|
| Official URL/DOI: | doi:10.4028/www.scientific.net/MSF.635.43 |
| Uncontrolled Keywords: | Ferromagnetic shape memory alloys, x-ray diffraction, martensitic transition. |
| Divisions: | Material Science and Technology |
| ID Code: | 3526 |
| Deposited By: | Dr. A K Sahu |
| Deposited On: | 19 Jul 2011 15:17 |
| Last Modified: | 09 Feb 2012 13:02 |
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