Screw-like structures in ex situ Tl2Ba2CuO6 films

被引：0
|
作者：
Erts, D [1 ]
Ivanov, ZG
Olin, H
Claeson, T
Chen, HQ
Johansson, LG
Hu, QH
机构：
[1] Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden
[2] Univ Gothenburg, Dept Inorgan Chem, SE-41296 Gothenburg, Sweden
[3] Univ Latvia, Inst Chem Phys, LV-1586 Riga, Latvia
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1998年 / 66卷
关键词：
D O I：
10.1007/s003390051331
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The growth of ex situ Tl2Ba2CuO6 films on single-crystal LaAlO3 was investigated using atomic force microscopy and X-ray diffraction. Most of the film surface consisted of flat areas separated by single or several unit-cell steps. This morphology suggests that the films grow predominantly by a step-flow mechanism. A Tl-2201 film grown using a precursor him deposited at 700 degrees C exhibited stacks of planes arranged in a screw-like manner on a flat background. Islands of 1-3 mu m size and a height of 2-20 unit cells were dominant structures on the surface. Possible causes for the formation of the screw-like structures are discussed.
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页码：S1223 / S1226
页数：4
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