DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hong, InKi | - |
dc.contributor.author | Hwang, Hyunseok | - |
dc.contributor.author | Han, Yung-Hee | - |
dc.contributor.author | Han, Sang-Chul | - |
dc.contributor.author | Sung, Tae-Hyun | - |
dc.contributor.author | No, Kwangsoo | - |
dc.date.accessioned | 2007-09-19T05:25:22Z | - |
dc.date.available | 2007-09-19T05:25:22Z | - |
dc.date.issued | 2003 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 13, NO. 2, pp.3165-3168 | en |
dc.identifier.issn | 1051-8223 | - |
dc.identifier.uri | http://hdl.handle.net/10203/1492 | - |
dc.description.abstract | Melt textured growth YBCO superconductors were fabricated by the top seeding method using Sm1.8 (Sm/sub 1.8/Ba/sub 2.4/Cu/sub 3.4/O/sub 7-x/) seed. The relationship between the Y211 particles and the platelet structures was investigated by micro-structural analysis using SEM. The microstructures of melt textured YBCO superconductors have been examined by TEM and HRTEM. The results of TEM studies clarified the direction of crystal growth and a variety of micro-defects such as twin structures and stacking faults that might behave as pinning centers. Our studies were focused on the stacking faults among those micro-defects by HRTEM and formation mechanism of the stacking faults was studied. The stacking faults formed during the tetragonal to orthorhombic transition that occurred at 450/spl deg/C in oxygen annealing. The platelet structures were clearly observed by SEM due to the chemical etching effects. The lengths of stacking faults were increased as the oxygen annealing time increased from 1 hr to 50 hr. The stacking faults were considered to relate to the oxygen contents, as the platelet structures were. The results suggested an oxygen diffusion model for the formation of the stacking faults. | en |
dc.description.sponsorship | This work was supported in part by the KEPRI (Korea Electric Power Research Institute), Republic ofKorea. Thiswork was supported by a grant from the Center for 10MJ Superconducting Flywheel Energy Storage System, Korea Electric Power Research Institute (KEPRI) and the Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Republic of Korea. | en |
dc.language.iso | en_US | en |
dc.publisher | IEEE | en |
dc.subject | YBCO | en |
dc.subject | platelet | en |
dc.subject | superconductors | en |
dc.title | Effects of the Platelet Structures on the Melt Textured Growth YBCO Superconductors | en |
dc.type | Article | en |
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