X-RAY-SCATTERING FROM ROTATIONAL DISORDER IN EPITAXIAL-FILMS - AN UNCONVENTIONAL MOSAIC CRYSTAL

被引:104
作者
MICELI, PF [1 ]
PALMSTROM, CJ [1 ]
机构
[1] BELLCORE,RED BANK,NJ 07701
来源
PHYSICAL REVIEW B | 1995年 / 51卷 / 08期
关键词
D O I
10.1103/PhysRevB.51.5506
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Motivated by x-ray-scattering measurements performed on ErAs(001)/GaAs(001) and In0.7Ga0.3P(001)/GaAs(001), we present a model that explains the origin of a narrow peak and diffuse scattering, which are frequently observed at Bragg reflections in epitaxial systems. Central to the model is a correlation length for mosaiclike rotational disorder that arises in lattice-mismatched epitaxial films. The adhesive force between the film and the substrate is found to play a crucial role and leads to a striking anisotropy in the line shapes. © 1995 The American Physical Society.
引用
收藏
页码:5506 / 5509
页数:4
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