Structure and transport in rare-earth ferrates

Autor:	Eloisa Angeles, A. Atkinson, Edwin S. Raj, John A. Kilner, Andrey Berenov, Jeremy Rossiny
Rok vydání:	2008
Předmět:	Ionic radius Chemistry Inorganic chemistry Analytical chemistry chemistry.chemical_element General Chemistry Activation energy Crystal structure Condensed Matter Physics Oxygen Ion Octahedron Electrical resistivity and conductivity General Materials Science Perovskite (structure)
Zdroj:	Solid State Ionics. 179:1090-1093
ISSN:	0167-2738
DOI:	10.1016/j.ssi.2008.01.025
Popis:	The Rare-Earth ferrates REFeO 3 (RE = La, Pr, Sm, Gd, Ho) were prepared by the citric acid route. The distortion in the FeO 6 octahedron decreased with the decrease in the ionic radii (except for Ho) and the angle between adjacent FeO 6 octahedra decreased with the ionic radius of the rare earth. Electrical conductivity showed semiconducting behaviour with a complex dependence of the activation energy on the ionic radii of RE ion. Fast oxygen desorption was observed above 300 °C. No effect of A-site cation on the coefficients of thermal expansion was observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4595450fe8f58ac8fda06ece90c90161 https://doi.org/10.1016/j.ssi.2008.01.025 Zobrazit plný text záznamu Full Text from ScienceDirect