Abstract
We make large (in excess of 2 cm in diameter), Single crystal YBa-Cu-Oz-123 YBCO crystals, where X ≤ O.6, in a seventeen Step process or Some variant thereof from finely ground and well mixed 123 YBCO and 211 YBCO powders with a Small amount of Pt by controlling the rate of cooling from within a compact of the powders using a temperature gradient in the radial and axial planes (independently) of about 1-1 C./inch diameter of compact to nucleate the crystal growth. We promote crystal growth as well using a Samarium oxide seed crystal, preferably SmBa-Cu-Ozo where y ≤ 1.6. After nucleation we cool the compact slowly at a rate from about 0.1-1 C./hr to promote the single crystal development.
Recommended Citation
K. Y. Blohowiak et al., "Making large, single crystal, 123 YBCO superconductors," US Patent Office, Apr 2000.
Department(s)
Materials Science and Engineering
Patent Application Number
9130780
Patent Number
6046139
Document Type
Patent
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2026 The Authors, All rights reserved
Publication Date
2000-04-04
