Acoustic-Phonon Softening in the Invar AlloyPt
- 30 August 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 37 (9), 519-522
- https://doi.org/10.1103/physrevlett.37.519
Abstract
Inelastic neutron scattering experiments on an ordered Invar alloy Pt show large softening of the [100]TA and [110]T acoustic shear modes below the Curie temperature. In addition, a central peak is observed below 100 K, which, however, behaves noncritically. The phonon softening is discussed in terms of the magnetoelastic coupling caused by the electron-phonon interaction.
Keywords
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