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A comparison of the processes involved in the direct synthesis of GdSr2RuCu2Ox and NdSr2RuCu2Oy perovskites

✍ Scribed by Consiglia Tedesco; Heloise O. Pastore; Alberto Frache; Marcello Gombos; Attilio Immirzi; Antonio Vecchione; Leonardo Marchese

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 242 KB
Volume: 408-410
Category: Article
ISSN: 0921-4534
DOI: 10.1016/j.physc.2004.02.073

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✦ Synopsis

The processes involved during the direct synthesis of the GdSr 2 RuCu 2 O 8 compound and of the analogous Nd-based compound from the precursor oxides have been analyzed mainly by variable temperature X-ray powder diffraction (XRPD) and thermo-gravimetric analysis (TGA). The reaction paths for the two compounds are quite different: GdSr 2 RuCu 2 O 8 compound forms only after long annealing procedures by reaction of two intermediate compounds, while NdSr 2 RuCu 2 O 8 forms in a unique step.

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