Theory of Soft Optic Modes and Phase Transitions in $β - W$ Structure Transition-Metal Alloys

12 October 1970

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 25 (15) , 1014-1016
https://doi.org/10.1103/physrevlett.25.1014

Abstract

A calculation of the phonon frequencies of the

β - W

structure crystals shows that long-wavelength optic-mode instabilities occur. These are associated with a high density of electronic states in the transition-metal

d

bands. The

Γ_{15}^{(-)}

and

Γ_{25}^{(-)}

optic modes soften: these are consistent with a second-order structural phase transition.

Keywords

This publication has 18 references indexed in Scilit:

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Theory of Soft Optic Modes and Phase Transitions inβ−WStructure Transition-Metal Alloys

Abstract

Keywords

Theory of Soft Optic Modes and Phase Transitions in $β - W$ Structure Transition-Metal Alloys