Achieving fast oxygen diffusion in perovskites by cation ordering

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dc.creatorTaskin, A. A.
dc.creatorLavrov, A. N.
dc.creatorAndo, Yoichi
dc.date2005-01-07
dc.date.accessioned2026-07-07T03:03:05Z
dc.date.available2026-07-07T03:03:05Z
dc.descriptionThe oxygen-exchange behavior has been studied in half-doped manganese and cobalt perovskite oxides. We have found that the oxygen diffusivity in Gd_{0.5}Ba_{0.5}MnO_{3-δ} can be enhanced by orders of magnitude by inducing crystallographic ordering among lanthanide and alkali-earth ions in the A-site sublattice. Transformation of a simple cubic perovskite, with randomly occupied A-sites, into a layered crystal GdBaMn_2O_{5+x} (or isostructural GdBaCo_2O_{5+x} for cobalt oxide) with alternating lanthanide and alkali-earth planes reduces the oxygen bonding strength and provides disorder-free channels for ion motion, pointing to an efficient way to design new ionic conductors.
dc.description4 pages, 4 figures, accepted for publication in Appl.Phys.Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0501127
dc.identifierhttp://arxiv.org/abs/cond-mat/0501127
dc.identifierAppl. Phys. Lett. 86, 091910 (2005)
dc.identifierdoi:10.1063/1.1864244
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25626
dc.subjectMaterials Science
dc.subjectStrongly Correlated Electrons
dc.titleAchieving fast oxygen diffusion in perovskites by cation ordering
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