Structural variation of cubic and hexagonal MgxZn1−xO layers grown on MgO(111)∕c-sapphire

Structural variation of cubic and hexagonal MgxZn1−xO layers grown on MgO(111)∕c-sapphire

We report on the structure study of MgxZn1−xO films and, in particular, we will focus on MgxZn1−xO layers with x=0.28 and 0.41 MgxZn1−xO layers with different crystal structures of cubic and wurtzite that have been grown by plasma-assisted molecular-beam epitaxy on MgO∕c-sapphire with Mg∕Zn flux rat...

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Veröffentlicht in:Journal of applied physics 2005-09, Vol.98 (5)
Hauptverfasser: Vashaei, Z., Minegishi, T., Suzuki, H., Hanada, T., Cho, M. W., Yao, T., Setiawan, A.
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container_title Journal of applied physics
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creator Vashaei, Z.
Minegishi, T.
Suzuki, H.
Hanada, T.
Cho, M. W.
Yao, T.
Setiawan, A.
description We report on the structure study of MgxZn1−xO films and, in particular, we will focus on MgxZn1−xO layers with x=0.28 and 0.41 MgxZn1−xO layers with different crystal structures of cubic and wurtzite that have been grown by plasma-assisted molecular-beam epitaxy on MgO∕c-sapphire with Mg∕Zn flux ratio control. The MgxZn1−xO films have been characterized by high-resolution transmission electron microscopy (HRTEM) and high-resolution x-ray diffraction. The dependence of the cation-anion bond length to Mg content has been studied. A virtual crystal model of MgZnO has been applied to interpret the bond-length variation. HRTEM results indicate that the initial stage of the MgZnO growth on a MgO buffer layer starts with a cubic structure even in the case of a wurtzite structure at the end of growth.
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title Structural variation of cubic and hexagonal MgxZn1−xO layers grown on MgO(111)∕c-sapphire
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