Open AccessCrystal structure of the Sr6Nb4ZrO18 slab perovskite-like compound
Author(s) -
Yu. A. Titov,
N. N. Belyavina,
M.S. Slobodyanik,
V.V. Polubinskii,
O. Nakonechna
Publication year - 2015
Publication title -
french-ukrainian journal of chemistry
Language(s) - English
Resource type - Journals
ISSN - 2312-3222
DOI - 10.17721/fujcv3i2p65-71
Subject(s) - crystal structure , perovskite (structure) , materials science , crystallography , crystal (programming language) , diffraction , layer (electronics) , chemistry , composite material , optics , physics , computer science , programming language
The Sr6Nb4ZrO18 niobatozirconate has been synthesized from the Sr5Nb4O15 four-layer perovskite and the SrZrO3 perovskite at T = 1670 K by ceramic technique. Crystal structure of the Sr6Nb4ZrO18 compound has been studied by the X-ray powder diffraction method. It was shown that crystal structure of the Sr6Nb4ZrO18 (a = 0.5687(1) nm, c = 4.146(1) nm, R-3m space group) belongs to the Ba6Nb4TiO18-type with five-layer perovskite-like structure. The crystal structure features of the Sr6Nb4BIVO18 compounds (BIV = Ti, Sn, Zr) has been analyzed. The correlation between composition and crystal structure features for all Sr6Nb4BIVO18 (BIV = Ti, Sn, Zr) compounds, which leads to destruction slab perovskite-like structure has been revealed.