کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7996001 | 1516206 | 2016 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical properties of Fe-doped BaTiO3 films deposited on quartz substrates by sol-gel method
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
The Sellmeier's single oscillator function, n2Â =Â S+EcEd/(Ec2âE2), is related to the electronic structure of the films. Here S, Ec and Ed are the contribution from high-energy CP transitions, the oscillator energy and the dispersion energy respectively. The model was used to fit the refractive index n in the transparent region. As can be seen from the Figure, S value decreases with increasing Fe composition, indicating the contribution from high-frequency electronic transitions becomes less. Both Ec and Ed generally increase with the Fe concentration. The maximum electronic transition appears near the photon energy range of 2.56â3.29Â eV from the fitted oscillator, smaller than the Eg and nearly agree with the k observed. It suggests that the optical dispersion in the transparent region is mainly due to the higher CP virtual transitions.134
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 687, 5 December 2016, Pages 529-533
Journal: Journal of Alloys and Compounds - Volume 687, 5 December 2016, Pages 529-533
نویسندگان
Jianjun Tian, Huiping Gao, Weibing Deng, Haiwu Zheng, Furui Tan, Weifeng Zhang,