中文摘要：

采用分子束外延的方法在BaF2（111）衬底上制备出了高质量的Pb1-xMnxSe（0≤x≤0．0681）薄膜，X射线衍射结果表明，Pb1-xMnxSe薄膜为立方相NaCl型结构，没有观察到MnSe相分离现象，薄膜的取向为平行于衬底（111）晶面，晶格常数随着Mn含量的增加逐渐减小，Mn含量由Vegard公式得到．通过理论模拟Pb1-xMnxSe薄膜的透射光谱，得到了Pb1-xMnxSe薄膜的带隙与Mn组分的关系Pb1-xMnxSe薄膜的带隙宽度由0．28eV（x=0）按e指数形式增加到0．49ev（x=0.0681），同时还获得了Pb1-xMnxSe薄膜在波长为4-9.5μm间的折射率。

英文摘要：

High quality Pb1-xMnxSe（0≤x≤ 0.0681 ） thin films have been grown on BaF2 （111） substrates by molecular beam epitaxy. Optical and structural properties of the Pb1-xMnxSe films have been studied using transmission spectrum and high resolution X-ray diffraction（HRXRD）. HRXRD patems indicate that Pb1-xMnxSe films have cubic-phase structure, and MnSe phase separation is not observed. The film orientation is parallel to （111 ） surface of substrate. The lattice constant of Pb1-xMnxSe films decreases with increasing Mn content. The Mn content can be obtained by using Vegard＇ s formula. Sharp absorption edges were observed in the transmission spectrum of Pb1-xMnxSe films. The fundamantal band gap of the Pb1-xMnxSe films was obtained by simulation, which increases almost exponentially from 0.28 eV at x = 0 to 0.49 eV at x = 0.0681. The refractive index in the wavelength ranged from 4 to 9.5μm has also been obtained.