Direct observation of second neighbor interactions for Cr4+ doped forsterite by resonance Raman scattering

Dana M. Calistru, S. G. Demos, R. R. Alfano

Research output: Contribution to journalArticle

Abstract

Fifteen Cr4+ local modes are observed using resonance Raman scattering in a Cr:Mg2SiO4 crystal, instead of a maximum of nine internal vibrations predicted by first neighbor interactions. The larger-than-predicted number of modes is explained in terms of second neighbor interactions for the Cr4+ ion. The frequency dependence of the two tetrahedral stretching modes measured at 361 and 765 cm-1 on second neighbor parameters shows a different degree of localization at the Cr 4+ site for these modes.

Original languageEnglish (US)
Pages (from-to)2207
Number of pages1
JournalApplied Physics Letters
StatePublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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