کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1814224 1025646 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal parameters of MgSO4·7H2O and NiSO4·7H2O crystals added with urea and thiourea
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Thermal parameters of MgSO4·7H2O and NiSO4·7H2O crystals added with urea and thiourea
چکیده انگلیسی
Pure and impurity-added (with urea and thiourea) MgSO4·7H2O and NiSO4·7H2O single crystals were grown by the free-evaporation method from aqueous solutions. Density was measured by the flotation method. X-ray diffraction data were collected for powder samples and used for the estimation of thermal parameters like Debye-Waller factor, mean-square amplitude of vibration, Debye temperature and Debye frequency. The thermal parameters do not vary in a particular order with respect to impurity concentration, which could be attributed to the random disturbance created by the impurity molecules in the hydrogen-bonding system of the MgSO4·7H2O and NiSO4·7H2O lattices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 403, Issue 18, 1 September 2008, Pages 3164-3167
نویسندگان
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