Interfacial microstructure in Y1Ba2Cu3O7-δ high Tc superconductors

Alarco, J. & Dunlop, G.L. (1990) Interfacial microstructure in Y1Ba2Cu3O7-δ high Tc superconductors. Journal de physique. Colloque, C1(1), pp. 959-964.

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Abstract

The microstructures of YBa2Cu3O7-δ ceramics prepared from freeze dried powders and containing an excess of CuO have been studied by analytical electron microscopy. Special attention has been paid to the interfacial microstructure. It was found that a liquid phase formed during sintering between 890°C and 920°C and this promoted grain growth and densification. Both clean grain boundaries and boundaries containing an amorphous intergranular film, which was rich in Cu, have been observed. Both CuO and BaCuO2 were present as secondary phases.

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ID Code: 63993
Item Type: Journal Article
Refereed: Yes
Additional Information: Proceeding of the International Congress
Intergranular and Interphase Boundaries in materials
Keywords: Barium Compounds--Microstructure, Ceramic Materials--Grain Boundaries, Copper Oxide--Microstructure, Powder Metallurgy--Oxides, Yttrium Compounds--Microstructure, Electron Micrographs, Interfacial Structure, Mixed Oxide Superconductors, Optical Microscopy, Yttrium Barium Copper Oxide, Superconducting Materials
DOI: 10.1051/jphyscol:19901149
ISSN: 04491947
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 06 Nov 2013 22:51
Last Modified: 06 Nov 2013 23:04

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