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Title: | Preparation and characterization of coprecipitates and mechanical mixtures of calcium-strontium oxalates using XRD, SEM-EDX and TG | Authors: | KNAEPEN, Els VAN BAEL, Marlies SCHILDERMANS, Inge NOUWEN, Ria NOUWEN, Ria D'HAEN, Jan D'OLIESLAEGER, Marc QUAEYHAEGENS, Carl FRANCO, Dirk YPERMAN, Jan MULLENS, Jules VAN POUCKE, Lucien |
Issue Date: | 1998 | Publisher: | ELSEVIER SCIENCE BV | Source: | THERMOCHIMICA ACTA, 318(1-2). p. 143-153 | Abstract: | In view of the study of the chemistry of the oxalate coprecipitation process for preparing BiSrCaCuO superconductors, the characteristics of oxalates of calcium and strontium in the Ca(NO3)(2)-Sr(NO3)(2)-HNO3-H2O-(NH4)(2)C2O4 system are investigated. Based on XRD, SEM and TG a comparison between the crystal structure, morphology and thermal decomposition behavior of coprecipitated and physically mixed calcium and strontium oxalates with the same Ca/Sr stoichiometry is made. It is shown that the coprecipitated powders form homogeneous solid solutions of which the crystal structure, morphology and thermal behaviour depend on the Ca/Sr stoichiometry. (C) 1998 Elsevier Science B.V. | Notes: | Limburgs Univ Ctr, IMO, Lab Inorgan & Phys Chem, B-3590 Diepenbeek, Belgium. Limburgs Univ Ctr, IMO, Div Mat Phys, B-3590 Diepenbeek, Belgium.Mullens, J, Limburgs Univ Ctr, IMO, Lab Inorgan & Phys Chem, Bldg D, B-3590 Diepenbeek, Belgium. | Document URI: | http://hdl.handle.net/1942/3180 | DOI: | 10.1016/S0040-6031(98)00339-6 | ISI #: | 000075885400020 | Type: | Journal Contribution | Validations: | ecoom 1999 |
Appears in Collections: | Research publications |
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