A high-resolution transmission electron microscopy study of defects in γ-Al2O3 nanorods

被引:2
作者
Li, W. F. [1 ]
Ma, X. L.
Li, Y.
Zhang, W. S.
Zhang, Z. D.
机构
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
关键词
D O I
10.1557/JMR.2007.0102
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Surface and planar defect structures of gamma-Al2O3, nanorods synthesized by the arc-discharge method were studied by means of high-resolution transmission electron microscopy and image simulation. Our investigation showed that there was a high number density of twins in the nanorods. We suggested a possible configuration of [ I I I I twins in gamma-Al2O3, and this model fit our experimental result well. In some nanorods, the ordering of nanotwins gave rise to a local hexagonal-like structure. The twinned nanorods were usually enclosed by {100} and I I I I I facets, and their growth direction was changed from (I 10) into I 11). The surface structures of the nanorods confirmed that the {111}-type surface should be more stable.
引用
收藏
页码:595 / 602
页数:8
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