Structural studies of rhodium doped Sr2RuO4 |
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| Authors: | Brendan J Kennedy Tom Vogt |
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| Affiliation: | a School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
b Department of Physics, Brookhaven National Laboratory, Upton, NY 11973, USA |
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| Abstract: | The influence of Rh doping on the structure of Sr2RuO4 has been investigated using neutron powder diffraction methods. The metallic Ru rich compounds adopt a regular K2NiF4-type structure, space group I4/mmm, with Ru-O-Ru bond angles of 180°. The structures of the nonmetallic Rh rich compounds crystallise in space group I4/acd and are characterised by tilting of the MO6 octahedra reducing the Ru-O-Ru angle to about 160°. Irrespective of Rh content the MO6 polyhedra are not regular octahedra but are elongated along the c direction. The temperature dependence of the structure of Sr2Ru0.9Rh0.1O4 was investigated and revealed this elongation to be weakly temperature dependent. |
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| Keywords: | A. Oxides C. Neutron scattering D. Crystal structure |
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