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

Yang Liu; Emma E. McCabe; Derek C. Sinclair; Anthony R. West

doi:10.1039/B822785C

You do not have JavaScript enabled. Please enable JavaScript to access the full features of the site or access our non-JavaScript page.

Synthesis, structure and properties of the hexagonal perovskite, h-BaTi_1−xHo_xO_3−x/2

Yang Liu,^a Emma E. McCabe,^a Derek C. Sinclair^a and Anthony R. West^a

Author affiliations

^a Department of Engineering Materials, University of Sheffield, Mappin Street, Sheffield, UK

Abstract

The crystal structure of hexagonal (h)-BaTi_0.85Ho_0.15O_2.925 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-BaTi_0.85Ho_0.15O_2.925 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.

Download options Please wait...

Article information

DOI: https://doi.org/10.1039/B822785C
Article type: Paper
Submitted: 23 Dec 2008
Accepted: 01 May 2009
First published: 11 Jun 2009

Download Citation

J. Mater. Chem., 2009,19, 5201-5206

Permissions

Request permissions

Synthesis, structure and properties of the hexagonal perovskite, h-BaTi_1−xHo_xO_3−x/2

Y. Liu, E. E. McCabe, D. C. Sinclair and A. R. West, J. Mater. Chem., 2009, 19, 5201 DOI: 10.1039/B822785C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Fetching data from CrossRef.
This may take some time to load.

Journal of Materials Chemistry

Synthesis, structure and properties of the hexagonal perovskite, h-BaTi_1−xHo_xO_3−x/2

Abstract

Article information

Download Citation

Permissions

Synthesis, structure and properties of the hexagonal perovskite, h-BaTi_1−xHo_xO_3−x/2

Search articles by author

Spotlight

Advertisements