Nanoscale manipulation of pyrochlore: new nanocomposite ionic conductors.
Phys Rev Lett
; 87(14): 145901, 2001 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-11580662
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.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article