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Synthesis and Characterization of New Composite Oxides Related to the 2H-Perovskite Structure Type

Published online by Cambridge University Press:  16 February 2011

J. B. Claridge  and
H.-C. zur Loye
J. B. Claridge
Affiliation:
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, hanno@psc.sc.edu
H.-C. zur Loye
Affiliation:
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, hanno@psc.sc.edu
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Abstract

The synthesis, structural characterization, and magnetic properties of three strontium rhodium oxides Sr6Rh5O15, Sr4Rh3O9+δ, and Sr9Rh7O21+δ, is presented. While Sr6Rh5O15 is an example of a commensurate n = 1 member of the A3n+3A'nBn+3O6n+9 family of oxides, Sr4Rh3O9+δ, and Sr9Rh7O21+°, are examples of incommensurate n =2 and n = 3 members. Sr6Rh5O15 crystallizes in space group R32, a = 19.3197(2) Å, c = 13.0418(1) Å. The Sr6Rh5O15 structure is a superstructure of the Ba6Ni5O15 structure type. Sr4Rh3O9+δ, and Sr9Rh7P21+δ crystallize in the superspace group with lattice parameters of a = 9.6007(6), c1 = 2.6881(2), c2 = 4.2373(3), and a = 9.6127(6), c1 = 2.6769(2), c2 = 4.252(1), respectively. Their magnetic data are consistent with antiferromagnetic coupling between the chains leading to an ordered state at low temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 547: Symposium DD – Solid-State Chemistry of Inorganic Materials II , 1998 , 183
Copyright
Copyright © Materials Research Society 1999

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