Direct observation of grain orientation in YBa2Cu3O7-δthin films
作者:
M. Grant Norton,
Stuart McKernan,
C. Barry Carter,
期刊:
Philosophical Magazine Letters
(Taylor Available online 1990)
卷期:
Volume 62,
issue 2
页码: 77-82
ISSN:0950-0839
年代: 1990
DOI:10.1080/09500839008203742
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Using a recently developed specimen-preparation technique to examine heteroepitactic growth in ceramics, the early development of grain orientation in thin YBa2Cu3O7-δfilms prepared by pulsed-laser ablation can be determined. The technique involves deposition directly on to a specially prepared electron-transparent substrate. The films are examined during the early stages of growth by transmission electron microscopy. Three different orientations corresponding to different alignments of thecaxis of the YBa2Cu3O7-delta; unit cell with the MgO substrate could be determined from the particle morphology in the image, but were not detected by selected-area diffraction due to their small size.
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