INTERPRETATION OF X-RAY ROCKING-CURVE BROADENING CAUSED BY LATTICE-RELAXATION AROUND METASTABLE POINT-DEFECTS

被引：11

作者：

LESZCZYNSKI, M ^{[1
]}

机构：

[1] POLISH ACAD SCI,UNIPRESS,HIGH PRESSURE RES CTR,PL-01791 WARSAW,POLAND

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.48.17046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The x-ray rocking-curve broadening accompanying the transfer to and from the metastable state of EL2 and DX centers in GaAs and AlxGa1-x As has recently been observed experimentally [Leszczynski et al., Semicond. Sci. Technol. 6, B66 (1991)]. This paper gives a more quantitative analysis of the experimental results. Computer simulations of rocking curves based on the dynamical theory of x-ray diffraction for various models of the real crystal structure made it possible to evaluate the conditions in which the lattice relaxation could be observed in experiment. The general conclusion is that in all the materials examined, the inhomogeneities played a decisive role.- The possible range of the inhomogeneities and the strains around EL2 and DX centers is discussed in relation to their microscopic models.

引用

页码：17046 / 17052

页数：7

共 29 条

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