title: Nanoscale manipulation of pyrochlore: new nanocomposite ionic conductors.
abstract: The ionic conductivity of isometric pyrochlore, ideally A2B2O (7), is extremely sensitive to disordering of A- and B-site cations and oxygen anion vacancies. We report the first use of ion beam irradiation-induced disordering in Gd 2Ti 2O (7) to produce a strain-free, buried, disordered defect-fluorite layer approximately 12 nm thick within an ordered pyrochlore matrix. This approach provides a new means of creating nanoscale, mixed ionic-electronic conductors in pyrochlore ceramics, such as those required for solid-state electrochemical cells.
authors.affiliation: Department of Nuclear Engineering & Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104, USA.
authors.forename: J
authors.initials: J
authors.lastname: Lian
authors.forename: L M
authors.initials: LM
authors.lastname: Wang
authors.forename: S X
authors.initials: SX
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Chen
authors.forename: L A
authors.initials: LA
authors.lastname: Boatner
authors.forename: R C
authors.initials: RC
authors.lastname: Ewing