Sensitivity of X-ray diffractometry for strain depth profiling in III–V heterostructures
- 1 June 1987
- journal article
- Published by International Union of Crystallography (IUCr) in Journal of Applied Crystallography
- Vol. 20 (3) , 222-229
- https://doi.org/10.1107/s0021889887086801
Abstract
The use of the fine structure of X-ray rocking curves for the characterization of the abruptness of heterointerfaces is presented for the particular example of Ga1−x Al x As/GaAs heterojunctions. The sensitivity of the method is discussed in detail for the 400 reflection with two different wavelengths (1.2378 and 1.5410 Å). It is shown that the conclusions can be extended to other reflections and wavelengths provided that the ratio χ hi /χ hr depending on both the absorption and the strength of the reflection is kept below 10−1.Keywords
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