Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
Volume 24, Issue 15-16, Pages 2369-2373Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979210064940
Keywords
Ni-Mn-Ga alloys; Ferromagnetic shape memory alloy; First principle; Martensitic transformation
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The effect of Fe elements on the total energy of Ni2MnGa ferromagnetic shape memory alloy was investigated. It is shown that Fe addition has little effect on the majority-spin density of state (DOS), but changes minority-spin DOS significantly. Substituting Fe for Mn decreases the total DOS of the parent phase, leading to the increase in parent phase stability. When Fe content is higher than 12.5at%, the increasing of martensitic transformation is related to the precipitation of gamma phase.
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