Title
Chemical composition and microstructure of magnetically melt-textured Bi2Sr2Ca0.8Dy0.2Cu2O8-y Chemical composition and microstructure of magnetically melt-textured Bi2Sr2Ca0.8Dy0.2Cu2O8-y
Author
Publication type
article
Publication
Copenhagen ,
Subject
Chemistry
Source (journal)
Journal of applied crystallography / International Union of Crystallography. - Copenhagen
Volume/pages
29() :Part 2 , p. 147-151
ISSN
0021-8898
ISI
A1996UL12700008
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
Dysprosium-doped Bi-based 2212 materials have been synthesized in the presence of a magnetic field, applied perpendicularly to the lateral face of a cylinder, by a melt-textured growth process. Thick (well oriented) layers of different chemical composition have been observed. A dysprosium-doped 2212 phase (the expected D phase) and a dysprosium-free bismuth-rich and strontium-deficient 2212 phase have been found. It is argued that the latter is a so-called M phase. Other impurity phases have been observed connected with both 2212-type layers. A novel aspect of this work is the calcium solubility at the strontium site in the 2201 structure, and inversely the strontium solubility at the calcium site in the 8250 structure.
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