RT Journal Article
T1 New perovskite materials of the La2-xSrxCoTiO6 series
A1 Yuste, Mercedes
A1 Pérez Flores, Juan Carlos
A1 Romero de Paz, Julio
A1 Azcondo Sánchez, María Teresa
A1 García Alvarado, Flaviano
A1 Amador Elizondo, Ulises
AB Substitution of La3+ by Sr2+ in the double perovskite La2CoTiO6 yields materials of the La2-xSrxCoTiO6 series showing a significant amount of trivalent cobalt ions when prepared at ambient atmosphere. The as-prepared compounds can be reduced in severe conditions retaining the perovskite structure while inducing the formation of a large amount of oxygen vacancies. The limit of aliovalent substitution in this series was found to extend up to x = 1. For substitution of La3+ up to 15% cobalt and titanium are ordered, though the order is progressively lost as x increases; for x ≥ 0.30 no ordering is observed as evidenced by magnetic measurements. The ability of these materials to present either cobalt ions in a mixed oxidation state or large amounts of anion vacancies depending on the atmosphere makes theminteresting to be further investigated regarding their electrical and electrochemical properties, and hence, their usefulness in some electrochemical devices.
PB Royal Society of Chemistry
SN 1477-9226
YR 2011
FD 2011
LK https://hdl.handle.net/20.500.14352/97791
UL https://hdl.handle.net/20.500.14352/97791
LA eng
NO Yuste, Mercedes, et al. «New Perovskite Materials of the La2−xSrxCoTiO6 Series». Dalton Transactions, vol. 40, n.o 31, 2011, p. 7908. DOI.org (Crossref), https://doi.org/10.1039/c1dt10196j.
NO Ministerio de Ciencia e Innovación (España)
NO Comunidad de Madrid
DS Docta Complutense
RD 6 abr 2025