Abstract
Fifteen Cr4+ local modes are observed using resonance Raman scattering in a Cr:Mg<thin>2SiO4 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<thin>4+ site for these modes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2207-2209 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 68 |
| Issue number | 16 |
| DOIs | |
| State | Published - 1996 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Cite this
Calistru, D. M., Demos, S. G., & Alfano, R. R. (1996). Direct observation of second neighbor interactions for Cr4+ doped forsterite by resonance Raman scattering. Applied Physics Letters, 68(16), 2207-2209. https://doi.org/10.1063/1.115860