La0.9Sr0.1Ga0.8Mn0.2O2.85: a new oxide ion conductor

Authors
Thangadurai, V Shukla, AK Gopalakrishnan, J
Citation
V. Thangadurai et al., La0.9Sr0.1Ga0.8Mn0.2O2.85: a new oxide ion conductor, CHEM COMMUN, (23), 1998, pp. 2647-2648
Citations number
12
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345 → ACNP
Issue
23
Year of publication
1998
Pages
2647 - 2648
Database
ISI
SICI code
1359-7345(199812):23<2647:LANOIC>2.0.ZU;2-3
Abstract
Isovalent substitution of Mn(II) for Mg(II) in the oxide ion conductor, La0 .9Sr0.1Ga0.8Mg0.2O2.85, yields a new oxide ion conductor which exhibits an ionic conductivity (sigma = 4.6 x 10(-2) S cm(-1) at 800 degrees C) that is comparable to the conductivity of the Mg(II) analogue; interestingly, the Mn(Ir) oxide has a lower activation energy for conduction (E-a = 0.47 eV) t han the Mg(II) oxide.