Synthesis and Properties of Lanthanide Ruthenium(III) Oxide Perovskites |
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| Authors: | Dr Alexandra Sinclair Dr Jennifer A Rodgers Craig V Topping Dr Martin Mí?ek Ross D Stewart Dr Winfried Kockelmann Dr Jan‐Willem G Bos Prof J Paul Attfield |
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| Institution: | 1. Centre for Science at Extreme Conditions (CSEC) and School of Chemistry, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ (UK);2. Institute of Chemical Sciences and Centre for Advanced Energy Storage and Recovery, School of Engineering and Physical Sciences, Heriot‐Watt University, Edinburgh EH14 4AS (UK);3. ISIS, Rutherford Appleton Laboratory, Oxon OX11 0QX (UK) |
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| Abstract: | An extensive series of new LnRuO3 perovskites has been synthesized at high pressure. These ruthenium(III)‐based oxides are ruthenium deficient, and high‐pressure samples have compositions close to LnRu0.9O3. 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 RuO6 octahedra are tetragonally compressed. These distortions, and the Mott insulator properties of the materials, are driven by strong spin‐orbit coupling. |
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| Keywords: | oxides perovskites ruthenium spin‐orbit coupling X‐ray diffraction |
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