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Remarkably High Oxide Ion Conductivity at Low Temperature in an Ordered Fluorite‐Type Superstructure
Author(s) -
Kuang Xiaojun,
Payne Julia L.,
Johnson Mark R.,
Radosavljevic Evans Ivana
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201106111
Subject(s) - superstructure , polarizability , ion , polyhedron , oxide , conductivity , fluorite , crystallography , flexibility (engineering) , materials science , chemistry , condensed matter physics , physics , thermodynamics , mathematics , combinatorics , molecule , metallurgy , statistics , organic chemistry
Mobile oxide ions : A remarkably high oxide ion conductivity at low temperatures has been found in an ordered δ‐Bi 2 O 3 superstructure with the composition Bi 1− x V x O 1.5+ x ( x =0.087 and 0.095), and attributed to a combination of highly polarizable sublattice with vacancies, central atoms able to support variable coordination numbers and geometries, as well as rotational flexibility of these coordination polyhedra, co‐existing in a pseudo‐cubic structure (see picture).