Effect of size factor on the Ruddlesden-Popper single-slab compounds structure features

Yuriy Alexandrovich Titov, Nadegda Nikolaevna Belyavina, Mikola Semenovich Slobodyanik, Olesya Ivanovna Nakonechna, Nataliia Yurievna Strutynska

Abstract


Character of influence of the strontium atoms replacement by smaller atoms of calcium on structure features of the Ruddlesden-Popper (Sr,Ca)LaScO4 (A2BO4) single-slab compoundis established. Structure of phase with a maximum degree of replacementhas determined by the Rietveld method. It is shown that such type of substitution increases a degree of AO9 interblock polyhedra deformation, mutual inclination of the BO6 octahedra and a decrease of A - О interblock bond. Presence of structure changes is the precondition for regulation of structural-dependent features of the materials on the base of scandates alkaline-earth and rare earth metals.


Keywords


Ruddlesden-Popper compound; solid solution; X-ray powder diffraction method; slab perovskite-like structure

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DOI: https://doi.org/10.17721/fujcV7I1P10-15

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