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Fast Solution Precursor Synthesis of the 2223 Phase: the Role of Lead in the Reaction Pathway

Published online by Cambridge University Press:  21 February 2011

H. Miao ,
V. Primo ,
R. Ibáñez ,
F. Sapiña ,
A. Beltrán  and
D. Beltrán Uibcm
H. Miao
Affiliation:
Departament de Química Inorgánica, Universität de Valencia Dr. Moliner, 50, 46100 Burjassot (Valencia) Spain
V. Primo
Affiliation:
Departament de Química Inorgánica, Universität de Valencia Dr. Moliner, 50, 46100 Burjassot (Valencia) Spain
R. Ibáñez
Affiliation:
Departament de Química Inorgánica, Universität de Valencia Dr. Moliner, 50, 46100 Burjassot (Valencia) Spain
F. Sapiña
Affiliation:
Departament de Química Inorgánica, Universität de Valencia Dr. Moliner, 50, 46100 Burjassot (Valencia) Spain
A. Beltrán
Affiliation:
Departament de Química Inorgánica, Universität de Valencia Dr. Moliner, 50, 46100 Burjassot (Valencia) Spain
D. Beltrán Uibcm
Affiliation:
Departament de Química Inorgánica, Universität de Valencia Dr. Moliner, 50, 46100 Burjassot (Valencia) Spain
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Abstract

Valuable mechanistic information, about the reaction pathway in the formation of the 2223 phase, has been obtained by the use of a solution synthesis route. The presence of lead in the starting mixture has remarkable effects on the nature and stability of the different intermediates: i) the grain size and morphology of Bi2CuO4 is severely changed, ii) calcium carbonate is partially decomposed to yield the calcium plumbate, iii) the 2201 phase results stabilized against the formation of the collapsed phase Bi17Sr16Cu7O49-δ, iv) the melting point of the intermediate 2212 is lowered by about 10 °C. All these effects, due to lead substitution, contribute to promote the formation of the 2223 phase, controlling also the morphology and properties of the final product.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 377
Copyright
Copyright © Materials Research Society 1998

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References

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