Theoretical prediction and experimental study of a ferromagnetic shape memory alloy: Ga_2MnNi
arXiv:0808.3469 · doi:10.1103/PhysRevB.78.134406
Abstract
We predict the existence of a new ferromagnetic shape memory alloy Ga_2MnNi using density functional theory. The martensitic start temperature (T_M) is found to be approximately proportional to the stabilization energy of the martensitic phase (deltaE_tot) for different shape memory alloys. Experimental studies performed to verify the theoretical results show that Ga_2MnNi is ferromagnetic at room temperature and the T_M and T_C are 780K and 330K, respectively. Both from theory and experiment, the martensitic transition is found to be volume conserving that is indicative of shape memory behavior.
11 pages, 3 figures
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- Ab initio Studies on Electronic and Magnetic Properties of XPtGa (X = Cr, Mn, Fe, Co) Heusler Alloys
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- Effect of Fe and Co substitution on martensitic stability, elastic, electronic and magnetic properties of MnNiGa: insights from \textit{ab initio} calculations
- Ab initio Study of Effect of Co Substitution on the Magnetic Properties of Ni and Pt-based Heusler Alloys
- AlMnCu: A magnetically ordered member of the Heusler alloy family despite having a valence electron count of 24
- Disproportionate influence of site disorder on the evolution of magnetic phases in anti-Heusler alloy AlMnFe