کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7992422 | 1516147 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved dielectric, magnetic and optical properties of Pr and Ti co-substituted BFO ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Bi1-xPrxFe1-xTixO3 ceramics with xâ¯â¤â¯0.20 were synthesized by solid state reaction method. XRD patterns confirm single phase formation for all the samples. Rietveld refinement of diffraction data reveals the structural transition from rhombohedral (R3c) phase for xâ¯â¤â¯0.10 to orthorhombic (Pnma) phase for xâ¯â¥â¯0.15. Temperature dependence dielectric plots exhibit two dielectric anomalies one at low temperature (â¼250â¯Â°C) and other at high temperature (â¼370â¯Â°C) corresponding to the magnetic transition temperature TN. Dielectric properties of samples were improved by controlling the amount of co doping to help ferroelectric measurements. Room temperature Mâ¯ââ¯H measurements have shown an increase in magnetization with x which may be due to the partial destruction of spin cycloid of FeOFe network caused by Ti doping. FT-IR spectra exhibit a broad absorption band at 567â¯cmâ1, whose broadness decreases with x. Absorption of light in the spectral range from 520â¯nm to 546â¯nm indicates an optical band gap in the visible range for these materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 747, 30 May 2018, Pages 611-620
Journal: Journal of Alloys and Compounds - Volume 747, 30 May 2018, Pages 611-620
نویسندگان
Vikash Singh, Subhash Sharma, R.K. Dwivedi,