کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1812474 1025617 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of vibration spectrum ferroelectric semiconductor SbSBr nanowire
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Investigation of vibration spectrum ferroelectric semiconductor SbSBr nanowire
چکیده انگلیسی
The temperature dependence of vibration spectra of one SbSBr chain (nanowire) in the direction of the c(z)-axis has been calculated in quasiharmonic approximation by diagonalization of dynamical matrix. The vibrational frequencies in the direction of c(z)-axis have been derived by fitting of the experimental low-frequency ωs2 of soft infrared (IR) mode of bulk-size SbSBr with the theoretical quasiharmonic low-frequency ω2 of SbSBr nanowires. In this work the nature of anharmonism and temperature dependence of force constants between atoms in SbSBr crystal along c(z)-axis have been discussed. The anharmonism of all soft (at BZ k=0) modes has been created by the interaction between phonons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 405, Issue 17, 1 September 2010, Pages 3599-3604
نویسندگان
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