کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5463372 | 1517186 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Band gap engineering and magnetic switching in a novel perovskite (1âx)KNbO3âxBaNb1/2Fe1/2O3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Band gap engineering and magnetic switching in a novel perovskite (1âx)KNbO3âxBaNb1/2Fe1/2O3 Band gap engineering and magnetic switching in a novel perovskite (1âx)KNbO3âxBaNb1/2Fe1/2O3](/preview/png/5463372.png)
چکیده انگلیسی
The phase transition, microstructure, optical and magnetic properties of a novel material (1âx)KNbO3âxBaNb1/2Fe1/2O3 (xKBNFO) have been investigated. X-ray diffraction and Raman scattering spectra analyses suggest that all the samples are polycrystalline perovskite structure with an obvious phase transition. Optical absorption spectra indicate that BaNb1/2Fe1/2O3 (BNFO) doping has an effect on the energy band structure. The KBNFO ceramics exhibit the band gap (Eg) in the range of 1.72-2.48Â eV, much smaller than the 3.25Â eV Eg of KNbO3 material. Furthermore, the KBNFO materials present room-temperature ferromagnetism, and the magnetism can be controlled by the BNFO doping content. These results are helpful in the deeper understanding of phase transition, band gap tunability, and magnetism variations in perovskite and show the potential roles in perovskite solar cells and multiferroic applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 202, 1 September 2017, Pages 39-43
Journal: Materials Letters - Volume 202, 1 September 2017, Pages 39-43
نویسندگان
Lu Yu, Hongmei Deng, Wenliang Zhou, Pingxiong Yang, Junhao Chu,