کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1816687 1525270 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Infrared vibrations of interstitial oxygen in silicon-rich SiGe alloys
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Infrared vibrations of interstitial oxygen in silicon-rich SiGe alloys
چکیده انگلیسی

We report on the infrared spectra of the antisymmetric stretching vibration of OiOi in Si-rich Si1-xGexSi1-xGex alloys. The shift of its frequency is obtained as a function of the germanium content x   below ∼0.5∼0.5. We present a decomposition of the low-temperature spectra using Gauss–Lorentz profiles. A low-lying broad band is found for x=0.08x=0.08, and assigned tentatively to the vibrations of Si2OSi2O units with the nearest sites occupied by several Ge atoms. We compare our experimental findings with results of a recent ab initio study of the phonon modes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volumes 376–377, 1 April 2006, Pages 212–215
نویسندگان
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