کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
862116 1470799 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Raman spectra of double-filled skutterudites InxYbyCo4Sb12
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Raman spectra of double-filled skutterudites InxYbyCo4Sb12
چکیده انگلیسی

The lattice dynamics of double-filled skutterudites InxYbyCo4Sb12 have been studied by means of Raman spectra as a function of the In and Yb filling ratios. We have studied the impact of void-filling process on the peak position and peak linewith. In particular, the relative height of the higher-energy Ag mode decreases gradually upon void-filling, which has been attributed to the “rattling” effects of the filling atoms in Sb icosahedrons. It is found that the double-filling process has produced more pronounced “rattling” effects than the single-filling process, accounting for more effective scattering of phonons and lower lattice thermal conductivity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Engineering - Volume 27, 2012, Pages 121-127