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Synthesis and Properties of Lanthanide Ruthenium(III) Oxide Perovskites
Author(s) -
Sinclair Alexandra,
Rodgers Jennifer A.,
Topping Craig V.,
Míšek Martin,
Stewart Ross D.,
Kockelmann Winfried,
Bos JanWillem G.,
Attfield J. Paul
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201403223
Subject(s) - ruthenium , orthorhombic crystal system , perovskite (structure) , lanthanide , ruthenium oxide , materials science , octahedron , neutron diffraction , oxide , inorganic chemistry , crystallography , chemistry , crystal structure , catalysis , organic chemistry , metallurgy , ion
An extensive series of new LnRuO 3 perovskites has been synthesized at high pressure. These ruthenium(III)‐based oxides are ruthenium deficient, and high‐pressure samples have compositions close to LnRu 0.9 O 3 . These phases stabilize ruthenium(III) which is very unusual in oxides. X‐ray and neutron powder diffraction studies show that the materials adopt orthorhombic perovskite superstructures in which the RuO 6 octahedra are tetragonally compressed. These distortions, and the Mott insulator properties of the materials, are driven by strong spin‐orbit coupling.