Effect of Y2BaCuO5 Particle Size on Undercooling and Solidification Rate of YBa2CU3O7-x

Abstract

The solidification rate of YBa2Cu3O7-x (123) was investigated for its dependency on Y2BaCuO5 (211) particle size in the liquid phase. Microstructural development and reaction sequences of platinum doped and undoped 123 samples were studied by microscopy and DTA techniques. Experimental studies revealed that solidification of 123 phase occurs at a more rapid rate and smaller undercooling (DeltaT) as the size of 211 particles in the melt decreases due to the effect of platinum addition. The results suggests that the critical nucleation and growth temperature of 123 within the melt is controlled by the degree of undercooling which, in turn, depends on the size or dissolution rate of 211 particles.

Department(s)

Materials Science and Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026 American Ceramic Society, All rights reserved

Publication Date

1997-05-01

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