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PMNT薄膜可见-红外光学性质的研究 被引量:2

OPTICAL CHARACTERISTICS OF PMNT THIN FILMS IN VISIBLE AND MID-INFRARED REGIONS
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摘要 通过对不同组分的铌镁钛酸铅(PMNT)薄膜的紫外-可见透射光谱以及红外椭圆偏振光谱的分析,利用Tauc-Lorentz(T-L)+Cauchy色散关系和经典中红外色散关系,得到了该材料在可见和中红外区的光学常数,发现在可见和中红外区,薄膜的折射率随着PT(PbTiO3)含量的增加而增大,但是薄膜的光学禁带宽度随之而减小. The ulatra-visible transmission spectra and infrared spectroscopic ellipsometry were measured on the ( 1 - x) Pb (MgmNb2/3)O3 -xPbTiO3 (PMNT)thin film with different component. The optical constants and optical band-gap of the thin films were obtained by using the Tauc-Lorentz( T - L) + Cauchy and middle infrared dispersion. It is found that the refractive index of PMNT increases as the wavelength increases in visible and mid-infrared ranges and the optical band-gap decreases slowly as the wavelength increases.
出处 《红外与毫米波学报》 SCIE EI CAS CSCD 北大核心 2007年第6期405-408,共4页 Journal of Infrared and Millimeter Waves
基金 国家自然科学基金(60407014和60527005) 上海市启明星科学基金(06QH14018和06QA14056) 上海市应用材料研究和发展基金(0423) 上海市教育委员会科学研究(07ZZ70)资助项目
关键词 PMNT薄膜 化学溶液法 红外椭圆偏振光谱 PMNT thin films chemical solution deposition infrared spectroscopic ellipsometry
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参考文献10

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二级参考文献42

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