کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5460431 | 1516182 | 2017 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-temperature dielectric properties of BaZr0.8Y0.2O3-δ ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: High-temperature dielectric properties of BaZr0.8Y0.2O3-δ ceramics High-temperature dielectric properties of BaZr0.8Y0.2O3-δ ceramics](/preview/png/5460431.png)
چکیده انگلیسی
Ceramic samples of BaZr0.8Y0.2O3-δ (BZY) were synthesized by solution combustion based on the glycine nitrate process. The dielectric properties were investigated in the temperature range of 300-870 K and frequency range of 102-106 Hz. Two types of carriers, hydroxyl ions and oxygen vacancies, coexist in the material and lead to three sets of relaxations. The activation energies were calculated to be 0.50, 0.65, and 1.27 eV for low-, middle- and high-temperature relaxations, respectively. The low-temperature relaxation was ascribed to be a dipolar relaxation resulting from the OHO
- -Y dipole. The middle- and high-temperature relaxations were argued to be Maxwell-Wagner relaxations associated with space charges caused by hopping oxygen vacancies blocked by grain boundaries and sample-electrode contacts, respectively.
- -Y dipole. The middle- and high-temperature relaxations were argued to be Maxwell-Wagner relaxations associated with space charges caused by hopping oxygen vacancies blocked by grain boundaries and sample-electrode contacts, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 712, 25 July 2017, Pages 263-267
Journal: Journal of Alloys and Compounds - Volume 712, 25 July 2017, Pages 263-267
نویسندگان
L. Tong, J. Sun, H.B. Li, T.T. Wan, Y.M. Guo, Y.D. Li, S.G. Huang, H. Wang, C.C. Wang,