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Browse Journals & Magazines > Journal of Vacuum Science & T ...> Volume:19 Issue:5 Help

Changes in surface states during epitaxial growth of BaTiO3 on SrTiO3 substrate in connection with composition deviation

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5 Author(s)
Shimoyama, K. ; Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan ; Kubo, K. ; Iida, M. ; Yamabe, K.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1116/1.1372904 

We have investigated the changes caused by composition deviation at growing surfaces during epitaxial growth of BaTiO3 in terms of morphology and oxidation state of cations. Surface morphology was significantly changed by the Ba/Ti ratio. Ba- and Ti-rich surfaces were roughened by three-dimensionally grown islands. An atomically flat surface and well-oxidized cations were obtained at the stoichiometric surface. Surface lattice parameters of the stoichiometric (Ba/Ti=1) sample during epitaxial growth of BaTiO3 on SrTiO3 substrate have been investigated by in situ reflection high-energy electron diffraction (RHEED) observation. We found that the oxygen partial pressure significantly influenced the surface lattice strain relaxation and RHEED oscillation. © 2001 American Vacuum Society.

Published in:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films  (Volume:19 ,  Issue: 5 )

Date of Publication: Sep 2001

Page(s):
2083 - 2088
ISSN :
0734-2101
Digital Object Identifier :
10.1116/1.1372904
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Sep 2001

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