Central Peak in the Raman Spectra of Quartz Crystals in a Wide Temperature Range

The spectral intensity of Raman scattering in quartz crystals has been calculated in a wide temperature range including the point of the α–β phase transition. It is established that a central peak is present in the scattered radiation spectrum at different temperatures with allowance for the interac...

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Bibliographic Details
Published inCrystallography reports Vol. 65; no. 4; pp. 605 - 611
Main Authors Gorelik, V. S., Golovina, T. G., Konstantinova, A. F.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2020
Springer Nature B.V
Subjects
Beta phase
Crystallography and Scattering Methods
Mathematical analysis
Phase transitions
Physical Properties of Crystals
Physics
Physics and Astronomy
Quartz
Quartz crystals
Raman spectra
Temperature
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Summary:The spectral intensity of Raman scattering in quartz crystals has been calculated in a wide temperature range including the point of the α–β phase transition. It is established that a central peak is present in the scattered radiation spectrum at different temperatures with allowance for the interaction between the fundamental soft mode and an additional low-frequency oscillator. The intensity and half-width of the central peak are calculateed in a wide temperature range.
ISSN:1063-7745
1562-689X
DOI:10.1134/S1063774520040100