کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1595650 | 1515709 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural phase transitions in Fe3+ -doped ferroelectric TlGaSe2 crystal
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structural phase transitions in Fe3+ -doped ferroelectric TlGaSe2 crystal Structural phase transitions in Fe3+ -doped ferroelectric TlGaSe2 crystal](/preview/png/1595650.png)
چکیده انگلیسی
This paper presents the results of dielectric constant and Electron Paramagnetic Resonance (EPR) investigations of Fe3+-doped TlGaSe2 single crystals in the temperature range of 15-300Â K. The influence of Fe impurities on dielectric properties and phase transitions of TlGaSe2 crystal has been studied. The results were considered in comparison with earlier observed results from pure TlGaSe2 compounds. We observed the considerable decrease of the dielectric constant as well as the change of the shape of the temperature dependence of the dielectric constant in doped crystals. Some certain significant changes of EPR spectra, which are associated with a strong splitting and appearance of additional resonance lines, were observed at the temperatures below 110Â K. Such transformations are considered as the result of non-equivalent displacements of different groups of Tl atoms during the structural phase transitions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 145, Issues 11â12, March 2008, Pages 539-544
Journal: Solid State Communications - Volume 145, Issues 11â12, March 2008, Pages 539-544
نویسندگان
M. Açıkgöz, S. Kazan, F.A. Mikailov, T.G. Mammadov, B. AktaÅ,