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Author Jun Hyung Lim ♦ Seok Hern Jang ♦ Kyu Tae Kim ♦ Seung Yi Lee ♦ Chang Min Lee ♦ Soo Min Hwang ♦ Jinho Joo ♦ Seung-Boo Jung ♦ Wan-Soo Nah
Sponsorship Council on Superconductivity ♦ Appl. Superconductivity Conference Inc ♦ MIT
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2002
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Fabrication ♦ Yttrium barium copper oxide ♦ Microstructure ♦ Calcination ♦ Temperature ♦ Powders ♦ Critical current density ♦ Critical current ♦ Grain size ♦ Kinetic theory ♦ 211-process ♦ Metal organic deposition ♦ pole figure ♦ trifluoroacetic acid ♦ YBCO coated conductor
Abstract YBCO films were fabricated using TFA-MOD method with a precursor solution of and powders dissolved in trifluoroacetic acid (TFA) (the so called "211-film"). The effect of the calcining temperature on the phase formation, texture evolution, and thermal and critical properties were investigated. The microstructure and critical current density of the 211-film varied significantly with the calcining temperature. The highest of 1.9 (corresponding critical current is 39 A/cm-width) was obtained for the film calcined at 460, which is probably due to the enhanced degree of texture and increased film density and grain size. In addition, the microstructure and properties of the 211-films were compared with those of the film made using the conventional TFA-MOD method with the precursor of the acetates being dissolved in TFA. The of the 211-film was higher than that produced by the conventional TFA-MOD method. TG, DTA, pole-figure, and SEM analyses indicated that the higher was due to the improved microstructure resulting from the enhanced reaction kinetics in the 211-film.
Description Author affiliation :: Sungkyunkwan Univ., Suwon
ISSN 10518223
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2007-06-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 17
Issue Number 2
Size (in Bytes) 0.96 MB
Page Count 4
Starting Page 3302
Ending Page 3305

Source: IEEE Xplore Digital Library