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Issue 43, 2014
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A solution chemistry approach to epitaxial growth and stabilisation of Bi2Ti2O7 films

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Abstract

Single crystalline pyrochlore Bi2Ti2O7 films have been grown in three different orientations on yttria-stabilised zirconia at temperatures as low as 600 °C, by using a simple wet chemistry method based on the spin-coating technique. Contrary to free-standing powders and polycrystalline films, epitaxial single crystalline Bi2Ti2O7 is stable relative to other bismuth titanate compounds at temperatures up to 900 °C. A study of core X-ray photoelectron spectra shows Bi2Ti2O7 films contain an oxygen deficiency whose concentration depends on the annealing temperature. Based on low-energy ion scattering spectroscopy, it was determined that crystalline surfaces terminate in BiOx-like structures.

Graphical abstract: A solution chemistry approach to epitaxial growth and stabilisation of Bi2Ti2O7 films

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Supplementary files

Article information


Submitted
22 Aug 2014
Accepted
26 Sep 2014
First published
29 Sep 2014

J. Mater. Chem. A, 2014,2, 18241-18245
Article type
Communication
Author version available

A solution chemistry approach to epitaxial growth and stabilisation of Bi2Ti2O7 films

F. E. Oropeza, I. J. Villar-Garcia, R. G. Palgrave and D. J. Payne, J. Mater. Chem. A, 2014, 2, 18241
DOI: 10.1039/C4TA04352A

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