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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/16976

Title: Elucidation of the Mechanism in Fluorine-Free Prepared YBa2Cu3O7-delta Coatings
Authors: Vermeir, Pieter
Cardinael, Iwein
Schaubroeck, Joseph
Verbeken, Kim
Baecker, Michael
Lommens, Petra
Knaepen, Werner
D'haen, Jan
De Buysser, Klaartje
Van Driessche, Isabel
Issue Date: 2010
Citation: INORGANIC CHEMISTRY, 49 (10), p. 4471-4477
Abstract: In this work, the reaction mechanism used in the preparation of fluorine-free superconducting YBa2Cu3O7-delta (YBCO) was investigated. To determine which precursor interactions are dominant, a comprehensive thermal analysis (thermogravimetric analysis-differential thermal analysis) study was performed. The results suggest that a three step reaction mechanism, with a predominant role for BaCO3, is responsible for the conversion of the initial state to the superconducting phase. In the presence of CuO, the decarboxylation of BaCO3 is kinetically favored with the formation of BaCuO2 as a result. BaCuO2 reacts with the remaining CuO to form a liquid which ultimately reacts with Y2O3 in a last step to form YBCO. High temperature X-ray diffraction experiments confirm that these results are applicable for thin film synthesis prepared from an aqueous fluorine-free sol gel precursor.
Notes: [Vermeir, Pieter; Schaubroeck, Joseph] Univ Coll Ghent, Fac Appl Engn Sci, B-9000 Ghent, Belgium. [Vermeir, Pieter; Lommens, Petra; De Buysser, Klaartje; Van Driessche, Isabel] Univ Ghent, Dept Inorgan & Phys Chem, B-9000 Ghent, Belgium. [Cardinael, Iwein; Verbeken, Kim] Univ Ghent, Dept Mat Sci & Engn, B-9052 Zwijnaarde, Belgium. [Baecker, Michael] Zenergy Power GmbH, D-53359 Rheinbach, Germany. [Knaepen, Werner] Univ Ghent, Dept Solid State Sci, B-9000 Ghent, Belgium. [D'haen, Jan] IMEC, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/16976
DOI: 10.1021/ic9021799
ISI #: 000277383900012
ISSN: 0020-1669
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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