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The effects of strain on morphology and structural properties of InGaAs/InP(001) grown by molecular beam epitaxy

Journal of Applied Physics, ISSN: 0021-8979, Vol: 67, Issue: 7, Page: 3378-3381
1990
  • 16
    Citations
  • 0
    Usage
  • 2
    Captures
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    Mentions
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    16
    • Citation Indexes
      16
  • Captures
    2

Article Description

A series of InGa As films with different compositions around x=0.53 were grown on InP(001) substrates by molecular beam epitaxy. These layers were studied by double crystal x-ray diffraction and secondary electron microscopy. It was found that the broadening of a layer Bragg peak is an indication of a large scale lattice relaxation in the highly strained heterolayer. In the less strained layers the peak widths are due to sample curvature and compositional grading. The morphologies of the strained layers suggested that the sign of strain is an important factor affecting the growth kinetics on the surface. In particular, an increasing tensile strain in the epitaxial layer tends to decrease the migration rate of the species on the growing surface.

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