کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10653137 1002829 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface acoustic phonon modes of Ge nanocrystals embedded in SiO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Surface acoustic phonon modes of Ge nanocrystals embedded in SiO2
چکیده انگلیسی
Ge nanocrystals (NCs) embedded in SiO2 are synthesized by ion implantation, and the surface vibrational modes of the Ge NCs are investigated using the low-frequency Raman scattering (LFRS) technique. LFRS studies show distinct low-frequency Raman modes in the range 6.5-21.2 cm−1 for the Ge NCs depending on the implant dose and annealing temperature. These low-frequency Raman modes are attributed to the confined surface acoustic phonon modes of Ge NCs with (0,0) spheroidal mode and (0,3) torsional modes. Our results are in excellent agreement with the recent theoretical predictions of surface vibrational modes in Ge NCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 136, Issue 1, October 2005, Pages 36-40
نویسندگان
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