Zn-triggered critical behavior of the formation of highly coherent domains in a Mg1-xZnxO thin film on Al2O3 -: art. no. 113404

被引:8
作者
Kim, C
Leem, SJ
Robinson, IK
Park, WI
Kim, DH
Yi, GC
机构
[1] LG Elect Inst Technol, Optoelect Grp, Seoul 137724, South Korea
[2] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
[3] Pohang Univ Sci & Technol, POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea
关键词
D O I
10.1103/PhysRevB.66.113404
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A series of Mg1-xZnxO (x=0, 0.05, 0.10, and 0.15) thin films were grown by metal-organic chemical vapor deposition on a (0001) sapphire substrate, and the structural characteristics of Mg1-xZnxO thin films were investigated by synchrotron x-ray diffraction. The increasing amount of Zn was found to gradually enhance the structural coherence of Mg1-xZnxO films. For a sample with 15 at. % of Zn, in particular, the formation of highly coherent domains in Mg1-xZnxO was observed to be triggered, with an accompanying phase separation of ZnO. An integrated intensity analysis predicted that the critical concentration x(c) of Zn at which the phase separation occurred was 0.086+/-0.015, and that the highly coherent domains in Mg1-xZnxO accounted for 12+/-1%.
引用
收藏
页码:1134041 / 1134044
页数:4
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