Nanoscale Manipulation of Pyrochlore: New Nanocomposite Ionic Conductors
Journal Article
·
· Physical Review Letters
The ionic conductivity of isometric pyrochlore, ideally A{sub 2}B{sub 2}O{sub 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{sub 2}Ti {sub 2}O{sub 7} to produce a strain-free, buried, disordered defect-fluorite layer approximately 12nm 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.
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- FG02-97ER45656
- OSTI ID:
- 40277690
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 87; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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