Journal
JOURNAL OF CRYSTAL GROWTH
Volume 301, Issue -, Pages 478-481Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2006.11.095
Keywords
crystal structure; photoluminescence; X-ray diffraction; molecular beam epitaxy; nitrides; semiconducting gallium compounds
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We grow GaN on MgO substrate by plasma-assisted molecular beam epitaxy (MBE). It is revealed that hexagonal GaN grows on (1 1 1) MgO substrate and cubic GaN grows on (0 0 1) MgO substrate according to the symmetry of the substrates. Mixture of hexagonal phase into cubic GaN is found to be formed in the growth on (0 0 1) MgO, and is investigated by reciprocal space mapping. We obtained GaN epitaxial films with flat surface morphology and good crystalline quality on (1 1 1) MgO substrate. (c) 2006 Published by Elsevier B.V.
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