Article
Electronic structure and lattice dynamics of the magnetic shape-memory alloy Co2NiGa
Physical Review B
Document Type
Article
Disciplines
Publication Date
8-20-2010
DOI
10.1103/PhysRevB.82.064420
Abstract
In addition to the prototypical Ni-Mn-based Heusler alloys, the Co-Ni-Ga systems have recently been suggested as another prospective materials class for magnetic shape-memory applications. We provide a characterization of the dynamical properties of this material and their relation to the electronic structure within a combined experimental and theoretical approach. This relies on inelastic neutron scattering to obtain the phonon dispersion while first-principles calculations provide the link between dynamical properties and electronic structure. In contrast to Ni2MnGa, where the softening of the TA2 phonon branch is related to Fermi-surface nesting, our results reveal that the respective anomalies are absent in Co-Ni-Ga, in the phonon dispersions as well as in the electronic structure.
Copyright Owner
American Physical Society
Copyright Date
2010
Language
en
File Format
application/pdf
Citation Information
M. Siewert, M. E. Gruner, A. Dannenberg, A. Hucht, et al.. "Electronic structure and lattice dynamics of the magnetic shape-memory alloy Co2NiGa" Physical Review B Vol. 82 Iss. 6 (2010) p. 064420 Available at: http://works.bepress.com/thomas_lograsso/44/
This article is from Physical Review B 82 (2010): 064420, doi:10.1103/PhysRevB.82.064420.