采用可变入射角全自动椭圆偏振光谱仪,在能量2.0～4.0 eV范围内测量了磁控溅射法制备的金属Mn膜的光学常数,分析了氩气流量对Mn膜光学性质的影响.结果表明,在低能区,随Ar流量的增加,薄膜的所有光学常数均有不同程度的降低;而在高能区,流量对光学常数的影响不明显.薄膜复介电常数、折射率n随流量增大不断减小,在流量为15 mL/min后变化不明显;而消光系数k在流量为15～20 mL/min没有明显变化,在流量达到25 mL/min后消光系数显著减小.
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