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1997 | 92 | 5 | 899-902
Article title

Vibrational Modes in Si_{x}Ge_{1-x} Alloys: Temperature and Compositional Dependence

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Languages of publication
EN
Abstracts
EN
We report infrared absorption spectra of crystalline Si_{x}Ge_{1-x} alloys with silicon content 0 ≤ x ≤ 1 at room and liquid nitrogen temperature. We covered the spectral range from 375 to 1200 cm^{-1} that includes the "Si-Ge" and "Si-Si" single-phonon transitions, the continuum of two-phonon processes, and the localized mode of interstitial oxygen. We study the change of vibrational structure and correlation between reference (pure Si and Ge) and alloy spectra. We observed shifts to lower wave numbers by about 1 cm^{-1} of the two-phonon absorption bands per 1% increase in germanium concentration. Pronounced changes of the vibrational spectra upon lowering the temperature were detected.
Keywords
EN
Publisher

Year
Volume
92
Issue
5
Pages
899-902
Physical description
Dates
published
1997-11
Contributors
author
  • Faculty of Science, Department of Solid State Physics, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
author
  • Faculty of Science, Department of Solid State Physics, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
References
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv92z510kz
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