کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1617808 | 1005695 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase transition in [Ca(NH3)6](ClO4)2 studied by neutron scattering methods and far infrared spectroscopy
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
2 studied by neutron scattering methods and far infrared spectroscopy Phase transition in [Ca(NH3)6](ClO4)2 studied by neutron scattering methods and far infrared spectroscopy](/preview/png/1617808.png)
چکیده انگلیسی
⺠FT-FIR spectra and diffraction patterns vs. temperature showed that phase transition is probably associated with a change of the crystal structure. ⺠Fast stochastic molecular reorientational motions of NH3 ligands do not change their character in the wide temperature range. ⺠High temperature phase is dynamically orientationally disordered phase. ⺠Low value of the activation energy for NH3 ligands reorientation suggests that this motion proceeds through the translation-rotation coupling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 509, Issue 23, 9 June 2011, Pages 6545-6550
Journal: Journal of Alloys and Compounds - Volume 509, Issue 23, 9 June 2011, Pages 6545-6550
نویسندگان
Joanna HetmaÅczyk, Åukasz HetmaÅczyk, Anna MigdaÅ-Mikuli, Edward Mikuli, Ireneusz Natkaniec,