XRD Rietveld-analysis of PBSCCO-2223 precursor powders used in OPIT processing: Pb2+ solubility in 2212

Räth, S.; Woodall, L.; Lehmann, M.; Gerards, M. und Schmahl, Wolfgang W. (2001): XRD Rietveld-analysis of PBSCCO-2223 precursor powders used in OPIT processing: Pb2+ solubility in 2212. In: IEEE Transactions on Applied Superconductivity, Bd. 11, Nr. 1 III: S. 2858-2861

Abstract

The phase assemblage in PBSCCO precursor powders for 2223-OPIT production has been investigated in a quantitative way with Rietveld analysis of x-ray powder diffractograms. The investigated precursors were made by spray pyrolysis of solutions of the appropriate bulk chemical composition of Pb0.33Bi1.80Sr1.87Ca2.00Cu3.00O10+δ, and subsequent calcination to remove volatile elements and to form a suitable precursor phase assemblage at temperatures between 800°C and 820°C, in air or under reducing conditions. The influence of temperature and atmosphere on the powder quality was investigated with regard to different minor phases, and the Pb-content of the 2212-phase.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Geowissenschaften > Department für Geo- und Umweltwissenschaften > Kristallographie und Materialwissenschaft
• Themengebiete: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
• Sprache: Englisch