Processing of YBCO single crystals was carried out by solidification of semi-liquid YBCO composition using a seeding technique. Microstructural characterization of the pinning centers was investigated by transmission electron microscopy. Characterization of single crystals was carried out, relating grain size and shape to the corresponding flux profiles. Current densities were calculated based on measured trapped fields. Once circulating currents were established, flux pumping and quenching experiments were conducted. These large single crystals will be incorporated into electromagnetic forming devices for use in the military and commercial aircraft manufacturing and service industries.
M. Strasik and F. Dogan and J. Liu and M. Sarikaya and K. Y. Blohowiak and D. F. Garrigus and T. S. Luhman and K. E. McCrary and I. A. Aksay and W. B. Hicks, "Evaluation of YBa2Cu3O7-x Bulk Superconductors for High Field Magnet Applications," IEEE Transactions on Applied Superconductivity, vol. 3, no. 1, pp. 1049-1052, Institute of Electrical and Electronics Engineers (IEEE), Jan 1993.
The definitive version is available at http://dx.doi.org/10.1109/77.233880
Materials Science and Engineering
Keywords and Phrases
TEM; YBCO Single Crystals; YBa_2 Cu_3 O_7-X; Barium Compounds; Bulk Superconductors; Circulating Currents; Critical Current Density (Superconductivity); Current Density; Electromagnetic Forming Devices; Flux Pinning; Flux Profiles; Flux Pumping; Grain Size; High Field Magnet Applications; High-Temperature Superconductors; Microstructure; Permanent Magnets; Pinning Centers; Quenching; Seeding Technique; Semi-Liquid YBCO Composition; Transmission Electron Microscope Examination of Materials; Transmission Electron Microscopy; Trapped Fields; Yttrium Compounds
International Standard Serial Number (ISSN)
Article - Journal
© 1993 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.