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题名: Effect of incorporating nonlanthanoidal indium on optical properties of ferroelectric Bi4Ti3O12 thin films
作者: Jia CH (Jia Caihong);  Chen YH (Chen Yonghai);  Ding LH (Ding Linghong);  Zhang WF (Zhang Weifeng)
发表日期: 2007
摘要: Bi4Ti3O12 (BTO) and Bi3.25In0.75Ti3O12 (BTO:In) thin films were prepared on fused quartz and LaNiO3/Si (LNO) substrates by chemical solution deposition (CSD). Their microstructures, ferroelectric and optical properties were investigated by X-ray diffraction, scanning electron microscope, ferroelectric tester and UV-visible-NIR spectrophotometer, respectively. The optical band-gaps of the films were found to be 3.64 and 3.45 eV for the BTO and BTO:In films, respectively. Optical constants (refractive indexes and extinction coefficients) were determined from the optical transmittance spectra using the envelope method. Following the single electronic oscillator model, the single oscillator energy E-0, the dispersion energy E-d, the average interband oscillator wavelength lambda(0), the average oscillator strength S-0, the refractive index dispersion parameter (E-0/S-0), the chemical bonding quantity beta, and the long wavelength refractive index n(infinity) were obtained and analyzed. Both the refractive index and extinction coefficient of the BTO:In films are smaller than those of the BTO films. Furthermore, the refractive index dispersion parameter (E-0/S-0) increases and the chemical bonding quantity beta decreases in the BTO and BTO:In films compared with those of bulk. (C) 2007 Published by Elsevier B.V.
刊名: APPLIED SURFACE SCIENCE
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Jia, CH (Jia, Caihong); Chen, YH (Chen, Yonghai); Ding, LH (Ding, Linghong); Zhang, WF (Zhang, Weifeng) .Effect of incorporating nonlanthanoidal indium on optical properties of ferroelectric Bi4Ti3O12 thin films ,APPLIED SURFACE SCIENCE,OCT 15 2007,253 (24):9506-9512
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