کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7938851 | 1513184 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite Effect of annealing temperature on structural, morphology and dielectric properties of La0.75Ba0.25FeO3 perovskite](/preview/png/7938851.png)
چکیده انگلیسی
The effect of annealing temperature on the structure, morphology and dielectric properties of La0.75Ba0.25FeO3 compound prepared by the sol-gel method was investigated. The increase of the annealing temperature from 900 to 1100â¯Â°C, promotes an increase of the average grain size value. Two dielectric relaxations are detected using the dielectric modulus formalism, attributed to grain and grain boundary relaxations. This behavior was confirmed by both Nyquist and Argand's plots of dielectric impedance and Modulus results at different measuring temperatures. The ac conductivity could be described by Jonscher's power law revealing the presence of both overlapping large polaron tunneling and non-overlapping small polaron tunneling mechanisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Superlattices and Microstructures - Volume 117, May 2018, Pages 260-270
Journal: Superlattices and Microstructures - Volume 117, May 2018, Pages 260-270
نویسندگان
F.B. Abdallah, A. Benali, M. Triki, E. Dhahri, M.P.F. Graça, M.A. Valente,