کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7998419 | 1516249 | 2015 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Physical properties and ethanol sensing of perovskite La0.8Pb0.2Fe1âxMgxO3 compounds
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Physical properties and ethanol sensing of perovskite La0.8Pb0.2Fe1âxMgxO3 compounds Physical properties and ethanol sensing of perovskite La0.8Pb0.2Fe1âxMgxO3 compounds](/preview/png/7998419.png)
چکیده انگلیسی
The nanocrystalline La0.8Pb0.2Fe1âxMgxO3 (x = 0.00, 0.05, 0.10 and 0.15) powders were prepared by sol-gel method using the citric acid route. The compounds were investigated with regard to their composition and microstructure, using XRD, Raman spectroscopy and FTIR methods. These compounds were found to exhibit an orthorhombic symmetry with the Pnma space group. The substitution of the Fe ion by the Mg one was found to increase the resistance of these compounds, where the resistance depended on both electrovalence compensation and oxygen vacancy compensation. The La0.8Pb0.2Fe1âxMgxO3 sensors showed p-type semiconducting properties within the temperature range of 100-400 °C. The electric results revealed that x = 0.15 sample presents high sensitivity and good selectivity to ethanol gas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 644, 25 September 2015, Pages 304-307
Journal: Journal of Alloys and Compounds - Volume 644, 25 September 2015, Pages 304-307
نویسندگان
S. Azizi, A. Benali, M. Bejar, E. Dhahri, M.P.F. Graça, M.A. Valente,