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(Ca(x)Nd(11-x))Ru(4)O(24) (x = 4.175).

ABSTRACT: Single crystals of the title compound, calcium neodymium ruthenate, (Ca(x)Nd(11-x))Ru(4)O(24) (x = 4.175), have been grown by the flux method. The structure consists of two crystallographically independent RuO(6) octa-hedra, which are isolated from each other and embedded in a matrix composed of the Ca and Nd atoms. There are seven M sites which accommodate the Ca and Nd atoms with different populations. Four M sites at general positions are enriched with Nd, whereas the remaining three M sites on twofold rotation axes are enriched with Ca. The coordination numbers of O atoms to the M sites range from 6 to 9. The mean oxidation state of Ru was estimated at +4.79 from the composition analysis. The title compound is non-centrosymmetric and potentially multiferroic.

SUBMITTER: Sakakura T

PROVIDER: S-EPMC3011423 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature

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(Ca(x)Nd(11-x))Ru(4)O(24) (x = 4.175).

Sakakura Terutoshi T Okada Keita K Iguchi Hironaga H Wang Jun J Ishizawa Nobuo N

Acta crystallographica. Section E, Structure reports online 20101117 Pt 12

Single crystals of the title compound, calcium neodymium ruthenate, (Ca(x)Nd(11-x))Ru(4)O(24) (x = 4.175), have been grown by the flux method. The structure consists of two crystallographically independent RuO(6) octa-hedra, which are isolated from each other and embedded in a matrix composed of the Ca and Nd atoms. There are seven M sites which accommodate the Ca and Nd atoms with different populations. Four M sites at general positions are enriched with Nd, whereas the remaining three M sites ...[more]

PMID: 21589203

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