The Effect of Platinum and Excess 211 Phase on the Loss of the Liquid Phase in Melt Textured Yba₂Cu₃O₇₋ₓ

Author

• William C. Hicks
• Fatih Dogan, Missouri University of Science and TechnologyFollow
• Michael Strasik
• Arthur C. Day
• Kevin E. McCrary

Abstract

Platinum is an important additive in YBa₂Cu₃O_7-x [123] powders for melt processing and growth of large, oriented crystals, but its role in liquid loss during the growth cycle is poorly understood. A series of experiments were conducted to determine how platinum effects liquid loss, and to study the solubility limit of platinum in 123. Both atomically mixed and solid state platinum sources were compared. Crystals were grown on a nonreactive setter so that liquid loss could be clearly distinguished by weight from reaction products with the setter. Based on weight loss studies there was little difference between atomically added platinum and by adding platinum powder to the 123 powders. In samples with no excess YBa₂CuO₅ (211), weight loss due to liquid loss was at a minimum of 3.8 percent with 0.3 weight percent platinum content. Examination with an electron microprobe reveals different microstructures for the two different methods of platinum additions.

Recommended Citation

W. C. Hicks et al., "The Effect of Platinum and Excess 211 Phase on the Loss of the Liquid Phase in Melt Textured Yba₂Cu₃O₇₋ₓ," IEEE Transactions on Applied Superconductivity, vol. 9, no. 2, pp. 2062 - 2065, Institute of Electrical and Electronics Engineers, Jun 1999.

The definitive version is available at https://doi.org/10.1109/77.784871

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

1051-8223, 1558-2515, 2378-7074

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026 Institute of Electrical and Electronics Engineers, All rights reserved

Publication Date

1999-06-30