کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10155410 1666349 2018 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dielectric, ferroelectric, and energy storage properties in dysprosium doped sodium bismuth titanate ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Dielectric, ferroelectric, and energy storage properties in dysprosium doped sodium bismuth titanate ceramics
چکیده انگلیسی
In this work, Na0.5(Bi1-xDyx)0.5TiO3 (0 ≤ x ≤ 15%) ceramics were prepared via solid state reaction method and were characterized. A stable and pure perovskite phase was revealed by X-ray diffraction analysis for all compositions and a symmetry change from rhombohedral to orthorhombic phase was detected beyond 10% of Dy substitution. The incorporation of Dy3+ into Sodium Bismuth Titanate (Na0.5Bi0.5TiO3) matrix allows a substantial decrease of the coercive field, an increase in the resistivity, and leads to a high stability of the dielectric permittivity (∆ɛ/ɛ(150 °C) ≤ ± 15%) over a wide temperature range. Furthermore, this system was found to exhibit improved energy storage properties at high temperatures with a maximum energy density of 1.2 J/cm3 obtained for 2%Dy composition at 200 °C. The obtained results are very promising for energy storage capacitors operating at high temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19451-19460
نویسندگان
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