Issue 11, 1996
From the journal:

Journal of Materials Chemistry

A neutron diffraction study of structural distortions in the Ruddlesden–Popper phase Na2La2Ti3O10

A. J. Wright  and  Colin Greaves  

Abstract

The structure of Na2La2Ti3O10(tetragonal, space group I4/mmm) has been re-examined using time-of-flight powder neutron diffraction in order to clarify uncertainties remaining from an X-ray diffraction study. One of the oxygen atoms is shown to be displaced significantly from its ideal position, the shift being consistent with the rotation of one of the TiO6 octahedra by ca. 12.5° around the [001] direction. This rotation allows for a 2.5% increase in four of the Ti—O bond lengths and a corresponding decrease in the bond valence sum from 4.9 to 4.1. The structural distortion is similar to that observed previously at overbonded octahedral sites in related structures.

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Article information

DOI
https://doi.org/10.1039/JM9960601823
Article type
Paper

J. Mater. Chem., 1996,6, 1823-1825

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A neutron diffraction study of structural distortions in the Ruddlesden–Popper phase Na2La2Ti3O10

A. J. Wright and C. Greaves, J. Mater. Chem., 1996, 6, 1823 DOI: 10.1039/JM9960601823

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