کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1404625 | 1501919 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal, dielectric properties and vibrational spectra of [n-C4H9NH3]2[BiBr5] crystal
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermal, dielectric properties and vibrational spectra of [n-C4H9NH3]2[BiBr5] crystal Thermal, dielectric properties and vibrational spectra of [n-C4H9NH3]2[BiBr5] crystal](/preview/png/1404625.png)
چکیده انگلیسی
[n-C4H9NH3]2[BiBr5] exhibits five solid–solid structural phase transitions; at 309 (1st order), 291 (1st), 240 (1st), 219 (close to 2nd) and at 166 K (1st). The phase transitions at 291 and 240 K are accompanied by distinct dielectric anomalies. The dielectric relaxation process was found to appear over the phases (III) and (I). The infrared spectra for [n-C4H9NH3]2[BiBr5] were measured in the region of the internal vibration of the n-butylammonium cation (4000–400 cm−1) between 12 and 320 K. The temperature changes of wavenumbers and of a width for many of the internal modes of the n-butylammonium clearly indicate the contribution of the organic sublattice to the phase transition mechanism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volumes 792–793, 3 July 2006, Pages 265–273
Journal: Journal of Molecular Structure - Volumes 792–793, 3 July 2006, Pages 265–273
نویسندگان
J. Tarasiewicz, R. Jakubas, J. Baran, A. Pietraszko,