کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438813 | 1398188 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impedance spectroscopy study of Bi0.5(Na0.74K0.16Li0.10)0.5TiO3-Ba(Zr0.05Ti0.95)O3 ceramics prepared via combustion technique
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Impedance spectroscopy study of Bi0.5(Na0.74K0.16Li0.10)0.5TiO3-Ba(Zr0.05Ti0.95)O3 ceramics prepared via combustion technique Impedance spectroscopy study of Bi0.5(Na0.74K0.16Li0.10)0.5TiO3-Ba(Zr0.05Ti0.95)O3 ceramics prepared via combustion technique](/preview/png/5438813.png)
چکیده انگلیسی
0.025 ⤠x ⤠0.125, ceramics with single-phase perovskite structure were prepared via a combustion technique. Impedance spectroscopy was conducted over a wide temperature and frequency range in order to investigate the influences of BZT on electrical properties and conduction mechanisms. Analysis using impedance complex plane plots combined with spectroscopic plots of the imaginary component of the impedance and electric modulus revealed an electrically homogeneous microstructure with increasing BZT content. With the increase in BZT content, the resistivity increased from ~106 Ω-cm at x = 0.025 to ~107 Ω-cm at x = 0.125. The activation energy determined from an Arrhenius-type plot of conductivity was also found to increase from 0.97 eV (x = 0.025) to 1.62 eV (x = 0.125), which is close to half of the optical bandgap, suggesting a change in conduction mechanism towards an intrinsic electronic conduction mechanism. IS measurement under different oxygen partial pressure was also performed on selected sample. The possible defect chemistry conditions responsible for the observed electrical properties will also be discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Supplement 1, August 2017, Pages S145-S150
Journal: Ceramics International - Volume 43, Supplement 1, August 2017, Pages S145-S150
نویسندگان
Sasiporn Prasertpalichat, Buratsakorn Phongthipphithak, Nitish Kumar, David P. Cann, Theerachai Bongkarn,