Synthesis, structure and properties of the hexagonal perovskite, h-BaTi1-xHoxO3-x/2

Liu, Y., McCabe, E.E., Sinclair, D.C., West, A.R. (2009) Synthesis, structure and properties of the hexagonal perovskite, h-BaTi1-xHoxO3-x/2. Journal of Materials Chemistry, 19 (29). pp. 5201-5206. ISSN 09599428 (ISSN). (doi:10.1039/b822785c) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Abstract

The crystal structure of hexagonal (h)-BaTi0.85Ho 0.15O2.925 has been determined using neutron powder diffraction data. The structure is derived from that of h-BaTiO3 and contains Ho3+, the largest cation known to be accommodated by the B site in h-BaTiO3. Ti and Ho are disordered over the B1 octahedral sites and the structure may be regarded as intermediate between those of h-BaTiO3 and Ba3Sr(Nb,Ta)2O9. h-BaTi0.85Ho0.15O2.925 forms as a long-lived but metastable, intermediate phase before transforming, slowly, to the thermodynamically stable cubic polymorph of the same composition; its formation is an example of Ostwald's rule of successive reactions. It is an electrical insulator with relative permittivity of �50. © 2009 The Royal Society of Chemistry.

Item Type: Article
DOI/Identification number: 10.1039/b822785c
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - J. Mater. Chem. [Field not mapped to EPrints] AD - Department of Engineering Materials, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Hexagonal perovskite, Intermediate phase, Neutron powder diffraction data, Octahedral sites, Ostwald's Rule, Relative permittivity, Structure and properties, Thermodynamically stable, Barium, Barium compounds, Holmium, Neutron diffraction, Oxide minerals, Perovskite, Reaction intermediates, Tantalum, Crystal structure
Subjects: Q Science > QC Physics > QC176 Solid state physics
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Emma McCabe
Date Deposited: 10 Apr 2015 09:56 UTC
Last Modified: 29 May 2019 14:25 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/47930 (The current URI for this page, for reference purposes)
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