Directional solidification by appropriate chemically active single crystal seed: An alternative way of generating large superconducting 123 single domain

Journal Article · Sun Nov 30 23:00:00 EST 1997 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1997.0416· OSTI ID:565731

Cloots, R; Auguste, F; Rulmont, A ^[1]; Vandewalle, N; Ausloos, M ^[2]

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1. SUPRAS, Chemistry Institute B6, University of Liege, Sart-Tilman, B-4000Liege (Belgium)
2. SUPRAS, Physics Institute B5, University of Liege, Sart-Tilman, B-4000Liege (Belgium)

A Dy{sub 2}O{sub 3} single crystal has been used as a seed for the growth of isothermally melt-textured Dy-123 material. The nucleation-controlled step has been observed to be related to the heterogeneous nucleation of 211 particles at the surface of the dysprosium oxide single crystal. The subsequent growth mode seems to be controlled by a high concentration gradient of dysprosium in the liquid phase. This leads to a directional solidification process of the 123 phase. The size of the 211 particles seems to decrease as the distance from the dysprosium oxide single crystal increases. {copyright} {ital 1997 Materials Research Society.}

• OSTI ID: 565731
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 12 Vol. 12; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
CRYSTAL GROWTH
DYSPROSIUM OXIDES
HIGH-TC SUPERCONDUCTORS
MICROSTRUCTURE
SOLIDIFICATION
TEXTURE