Phase diagrams for the YBa2Cu3O7 family — ANNO 1996

Abstract

Phase diagrams for cupratcs of alkaline earth and rare earth elements are presented, covering binary to quintenary oxides and including selected solid solution series with other elements. Elementary crystal chemical data are included for identification of the occurring phases. Chemical stability is discussed with respect to the high-temperature reactions with Lewis acids like CO2, protons, etc. Particularly the occurrence of oxide carbonates is consistently pointed out as one of the possible reasons for contradictory results in phase diagrams which comprise oxides with high basicity.

Analysis of Compositional Distributions for Exploring the Phase Space by the Single Sample Concept in Ceramic Combinatorial Chemistry

“… Numerical results for two particular cuprate superconductors: (a) YBa 2 Cu 3 O x ; (b) Bi 2 Ca 2 Sr 2 Cu 3 O x . Panel (a) includes the ranges of Δ X E values published in the literature 20,21 . Relatively large Δ X E values allow for a significant overlap with p ( X E ) functions, assumed to follow a log( d )‐normal distribution with μ=1 and σ=0.1.…”