On the Crystallographic Polytypes SrAl12O19 (BaFe12O19)–BaFe18O27

S. V. Borisov; S. A. Magarill; N. V. Pervukhina

doi:10.1134/S1063774519040060

On the Crystallographic Polytypes SrAl₁₂O₁₉ (BaFe₁₂O₁₉)–BaFe₁₈O₂₇

S. V. Borisov, S. A. Magarill, N. V. Pervukhina

Лаборатория полупроводниковых и диэлектрических материалов ФФ

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Abstract

Abstract: A crystallographic analysis of SrAl₁₂O₁₉ (isostructural to BaFe₁₂O₁₉) and BaFe₁₈O₂₇ showed that the structures of both polytypes contain almost identical cationic and anionic (with participation of a large cation) sublattices, whose geometry is consistent with the high symmetry P6₃/mmc of these compounds. The presence of unified “skeletal” sublattices is considered to be the main condition for the formation of polytype structures.

Original language	English
Pages (from-to)	566-569
Number of pages	4
Journal	Crystallography Reports
Volume	64
Issue number	4
DOIs	https://doi.org/10.1134/S1063774519040060
Publication status	Published - 1 Jul 2019

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abstract = "Abstract: A crystallographic analysis of SrAl12O19 (isostructural to BaFe12O19) and BaFe18O27 showed that the structures of both polytypes contain almost identical cationic and anionic (with participation of a large cation) sublattices, whose geometry is consistent with the high symmetry P63/mmc of these compounds. The presence of unified “skeletal” sublattices is considered to be the main condition for the formation of polytype structures.",

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AB - Abstract: A crystallographic analysis of SrAl12O19 (isostructural to BaFe12O19) and BaFe18O27 showed that the structures of both polytypes contain almost identical cationic and anionic (with participation of a large cation) sublattices, whose geometry is consistent with the high symmetry P63/mmc of these compounds. The presence of unified “skeletal” sublattices is considered to be the main condition for the formation of polytype structures.

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On the Crystallographic Polytypes SrAl₁₂O₁₉ (BaFe₁₂O₁₉)–BaFe₁₈O₂₇

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