Recent advances in the study of Aurivillius phases
(Bi2A
n
-1BnO3n+3,
n = 1−5) as oxide ion
conductors are presented. The structures of modified Aurivillius
phases containing extrinsic
oxygen vacancies as well as Aurivillius phases containing intrinsic
oxygen vacancies are
surveyed. A detailed discussion of the conductivity behavior of
these Aurivillius phases is
given.
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