Fig. 1: Study of structural evolution of BZCYYb prepared by conventional SSR method.
From: Sintering-induced cation displacement in protonic ceramics and way for its suppression
a, b XRD patterns of pristine BZCYYb-SSR and BZCYYb-0.93-SSR samples and after quenching at different temperatures. c The change of lattice interplanar spacing of (002) crystal plane before and after quenching at 1450 °C. d The spectra of Y K-edge XANES for BZCYYb-SSR before and after quenching at 1450 °C. e Fourier-transformed of Y K-edge EXAFS spectra of BZCYYb-SSR before and after quenching at 1450 °C. f The coordinate number and Y–O bond length for BZCYYb-SSR before and after quenching at 1450 °C. g Diagram of the Y occupying the A-site (Ba) in perovskite, and the corresponding bond length with the neighboring oxygen atoms before and after Y substitution. Surface (h) and cross-sectional (i) SEM images of BZCYYb-SSR membrane sintered at 1450 °C. j Temperature dependence of conductivity for BZCYYb-SSR and GDC37 membrane.
