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化学溶液分解法制备的Bi2Ti2O7薄膜的红外光学性质研究

Keywords: 化学溶液分解法,铋钛氧薄膜,红外光学性质,红外椭圆偏振光谱仪,Lorentz-Drude色散模型,消光系数,折射率,吸收系数

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Abstract:

采用化学溶液分解法在n-GaAs(100)衬底上制备了Bi2Ti2O7薄膜.利用红外椭圆偏振光谱仪测量了波长为:2.8-12.5μm范围内Bi2Ti2O7薄膜的椭偏光谱,采用Lorentz-Drude色散模型拟合获得Bi2Ti2O7薄膜的红外介电常数,并进一步计算得到折射率n、消光系数κ和吸收系数α,拟合计算得到Bi2Ti2O7薄膜的厚度为139.2nm.

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