Accession Number:

ADP012832

Title:

Observation of a Martensitic Transition in the Raman Spectra of Ordered GaInP

Descriptive Note:

Conference proceedings

Corporate Author:

RUSSIAN ACADEMY OF SCIENCES SAINT PETERSBURG IOFFE PHYSICAL-TECHNICAL INST

Report Date:

1998-06-01

Pagination or Media Count:

4.0

Abstract:

We have observed a strong dependence of the intensity of the ordering-induced phonon bands on thermal treatment rapid cooling and annealing in Ranmn spectra RS of CuPtsub-B ordered Ga0.5In0.5P alloys. The changes of the Raman intensity occur only in diagonal backscattering configuration y 1-BAR,1,0, where the polarization of light is parallel to the mirror planes of the ordered structure. We found that there are at least two different intensity distributions of the optical phonon bands the appearance of which is determined by thermal treatment and the alloy film thickness. The bond polarizability model analysis shows that the observed RS behaviour can be described in terms of the order-disorder martensitic transition on trigonal lattice sites.

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE