First-principles study of lattice instabilities in the ferromagnetic martensite Ni$_2$MnGa

Details First-principles study of lattice instabilities in the ferromagnetic martensite Ni$_2$MnGa First-principles study of lattice instabilities in the ferromagnetic martensite Ni$_2$MnGa

2003-04-15

arxiv.org/abs/cond-mat/0304349v1

Physics

Condensed Matter

Materials Science

submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.68.134104

The phonon dispersion relations and elastic constants for ferromagnetic Ni$_2$MnGa in the cubic and tetragonally distorted Heusler structures are computed using density-functional and density-functional perturbation theory within the spin-polarized generalized-gradient approximation. For $0.9

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