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Mg composition dependent strain analysis in nonpolar a-plane MgxZn1-xO films
被引:6
|作者:
Saraf, G.
[1
]
Lu, Y.
[1
]
Siegrist, T.
[2
,3
]
机构:
[1] Rutgers State Univ, Dept Elect & Comp Engn, Piscataway, NJ 08854 USA
[2] Bell Labs, Murray Hill, NJ 07974 USA
[3] Columbia Univ, Dept Chem, New York, NY 10027 USA
关键词:
D O I:
10.1063/1.3000636
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
Nonpolar a-plane (1120) MgxZn1-xO (a-MgxZn1-xO) films are deposited on (0112) r-sapphire substrates using metalorganic chemical vapor deposition with varying Mg composition (x from 0 to 0.25). Unit cell parameters with Mg composition are determined by high-resolution triple-axis x-ray diffraction. In-plane strain along the c-axis [0001] and m-axis [1100] in the films is anisotropic and increases with increasing Mg composition. The in-plane strain anisotropy changes with Mg composition in a-MgxZn1-xO. Calculations are carried out to determine the influence of Mg content on the residual interfacial strain. (c) 2008 American Institute of Physics.
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