کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438458 | 1398184 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural characteristics and optical properties of lead-free Bi(Zn1/2Ti1/2)O3-BaTiO3 ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The xBi(Zn1/2Ti1/2)O3-BaTiO3 (xBZT-BT) ceramics, where x (mol) =0, 0.03, 0.06, 0.09, and 0.12, have been prepared by a solid-state reaction method. The phase transition, microstructure and optical properties were investigated. X-ray diffraction patterns indicate that the as-prepared samples have a polycrystalline perovskite structure. For x<0.06, the xBZT-BT ceramics exhibit clear tetragonal symmetry, and transform to rhombohedral phase as 0.06< xâ¤0.12. Coexistence of both tetragonal phase and rhombohedral phase is observed for x=0.06. The lattice strain is estimated by the Williamson-Hall analysis model, which suggests that the incorporation of substitution ions into the host lattice produces the inner stress field gives rise to structure distortions. The Raman scattering spectra corroborate the decrease in tetragonality with increasing the x, where the characteristic variation of phonon modes indirectly reveal the incorporation of Bi(Zn1/2Ti1/2)O3. Furthermore, the optical band gaps of xBZT-BT ceramics show a non-linear change, which can be explained by the crystal field theory and phase structure effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 6175-6179
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 6175-6179
نویسندگان
Lu Yu, Hongmei Deng, Wenliang Zhou, Pingxiong Yang, Junhao Chu,