NDLI: AFM and TEM studies on high-quality Bi-2223 thin films grown by MOCVD

Content Provider	IEEE Xplore Digital Library
Author	Endo, K. Shimizu, T. Matsuhata, H. Teherani, F.H. Yoshida, S. Tokumoto, H. Kajimura, K. Nakamura, K. Fueki, K.
Copyright Year	2002
Abstract	AFM and TEM observations of high- quality Bi-2223 thin films grown by MOCVD have been carried out to elucidate the crystal growth mechanism and the effect of surface structures on superconducting properties. AFM images of the film surfaces grown on flat planes (off-angle <0.3 deg.) of LaAlO/sub 3/, SrTiO/sub 3/ and MgO [001] substrates clearly showed a 2-dimensional nucleation growth. In contrast, those on vicinal planes (off-angle-3 deg.) of LaAlO/sub 3/, SrTiO/sub 3/ and Nd:YAlO/sub 3/ [001] substrates showed a step flow growth. The films grown on LaAlO/sub 3/, SrTiO/sub 3/ and Nd:AlO/sub 3/ showed the highest T/sub c(0/) of 97 K reported for as-grown BSCCO films. In addition, a TEM plan-view image of the film grown on [001] LaAlO/sub 3/ showed clearly the misfit dislocation network running along the orthogonal [110] directions at the heterointerface and having Burger's vectors b=1/2[110]. The clear AFM images of regularly-shaped terraces or step-edges and the distinct TEM image of the misfit dislocation network are evidence of high-quality MOCVD grown Bi-2223 films.<>
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1675
Ending Page	1679
Page Count	5
File Size	744997
File Format	PDF
ISSN	10518223
Volume Number	5
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transistors MOCVD Substrates Bismuth compounds Superconducting thin films Surface morphology Yttrium barium copper oxide Superconducting films Atomic force microscopy High temperature superconductors
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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