کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7897745 | 1510127 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced photodielectric effect in (0.88-x)Bi0.5Na0.5TiO3-0.12BaTiO3 -xBa(Ti0.5Ni0.5)O3-δ (BNBTNO) ceramics
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work, solid solutions of (0.88-x)Bi0.5Na0.5TiO3-0.12BaTiO3- xBa(Ti0.5Ni0.5)O3-δ were designed and prepared. These compositions exhibit ferroelectricity at room temperature, with the tetragonal symmetry. The c/a values are varied from â¼1.0067 (xâ¯=â¯0.1) to â¼1.0208 (xâ¯=â¯0.04). A transition from the high-temperature relaxor state to the low-temperature ferroelectric state is demonstrated by the temperature dependence of dielectric data and Raman spectrum. The direct bandgap decreases from 3.40â¯eV for xâ¯=â¯0 to 3.16â¯eV for xâ¯=â¯0.1. The Ba(Ti0.5Ni0.5)O3-δ addition leads an additional optical absorption peak in the visible range. The obvious photodielectric effect was discovered. In particular, the relative permittivity of the xâ¯=â¯0.1 composition rises from â¼756 to â¼807 under light illumination.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 14, November 2018, Pages 4689-4693
Journal: Journal of the European Ceramic Society - Volume 38, Issue 14, November 2018, Pages 4689-4693
نویسندگان
Yongxing Wei, Changqing Jin, Ruirui Ni, Yiming Zeng, Dong Gao, Zengyun Jian,