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Strain Issues on Crystal Growth of Bulk InGaAs from GaAs Seed

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4 Author(s)
Islam, M.R. ; Khulna Univ. of Eng. & Technol., Khulna ; Rahman, M.S. ; Verma, P. ; Yamada, M.

Strain issues in bulk InxGa1-xAs crystals grown from GaAs seed have been investigated using Raman scattering and energy dispersive X-ray experiments. It has been found that there exists a large amount of residual strain in bulk InxGa1-xAs crystals grown by the traveling liquidus zone (TLZ) and multi-component zone melting (MCZM) methods. Using axially symmetrical strain model, strain distributions have been evaluated for various possible compositional profiles including the profile currently used in the MCZM method. It has been found that the residual strain can be reduced remarkably by changing the profile presently being used in this growth method. It is expected that high-quality bulk In0.3Ga0.7As crystal can be obtained by the TLZ method using In0.3Ga0.7As seed-crystal which may be prepared by the MCZM method following the profile suggested in the present study.

Published in:

Indium Phosphide & Related Materials, 2007. IPRM '07. IEEE 19th International Conference on

Date of Conference:

14-18 May 2007

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