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Ag/YBa2Cu3O7-x Powder Generation by Aerosol Decomposition

Published online by Cambridge University Press:  28 February 2011

Toivo T. Kodas ,
Altaf H. Carim  and
Kevin C. Ott
Toivo T. Kodas
Affiliation:
Center for Micro-Engineered Ceramics and Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque, NM 87131
Altaf H. Carim
Affiliation:
Center for Micro-Engineered Ceramics and Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque, NM 87131
Kevin C. Ott
Affiliation:
Exploratory Research and Development Center, Los Alamos National Laboratory, Los Alamos, NM 87545
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Abstract

YBa2Cu3O7-x (123) powders containing silver have been prepared by aerosol decomposition. Metal nitrate solution droplets were decomposed at temperatures above and below the melting point of the Ag-O eutectic. In both cases, the Ag was present as a separate grain attached to YBa2Cu3O7-x. Individual aerosol particles had dimensions of 50 – 1000 nm. Grain sizes of Ag and 123 crystallites within these particles were 10 to 100 nm. Larger 123 grain sizes could be obtained by varying the reactor operating conditions. The powders provide a source of material for generation of YBa2Cu3O7-x/Ag ceramics with smaller Ag and 123 grain sizes and more uniform composition than can be obtained by other methods.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 381
Copyright
Copyright © Materials Research Society 1990

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