Paper Title:
Electronic and Structural Properties of Ferromagnetic Shape Memory Alloys Studied by Density Functional Theory
| Periodical | Advanced Materials Research (Volume 52) |
|---|---|
| Main Theme | Ferromagnetic Shape Memory Alloys |
| Edited by | Lluis Mañosa, P.K. Mukhopadhyay and S.R. Barman |
| Pages | 165-174 |
| DOI | 10.4028/www.scientific.net/AMR.52.165 |
| Citation | Aparna Chakrabarti et al., 2008, Advanced Materials Research, 52, 165 |
| Online since | June, 2008 |
| Authors | Aparna Chakrabarti, S.R. Barman |
| Keywords | Density Function Theory (DFT), Density of States (DOS), Martensitic Transition, Total Energy |
| Price | US$ 28,- |
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Abstract
The electronic and structural properties of different members of the Ni-Mn-Ga family calculated by ab initio density functional theory are discussed. From total energy calculations, we show that the martensitic phase is the stable low temperature phase. Moreover, occurrence of ferromagnetic and paramagnetic martensitic phases for Ni2MnGa and Ni2.25Mn0.75Ga, respectively, are explained. Modifications in the density of states near the Fermi level EF are observed across the martensitic transition for Ni2MnGa, as well as in Mn2NiGa. While Ni2MnGa is ferromagnetic, we find Mn2NiGa to be ferrimagnetic. The calculated lattice constants and the magnetic moments are in good agreement with experiment.
