The atomic structure and chemistry of Fe-rich steps on antiphase boundaries in Ti-doped Bi0.9Nd0.15FeO3

MacLaren, I. , Wang, L., Craven, A. J., Ramasse, Q. M., Schaffer, B., Kalantari, K. and Reaney, I. M. (2014) The atomic structure and chemistry of Fe-rich steps on antiphase boundaries in Ti-doped Bi0.9Nd0.15FeO3. APL Materials, 2(066106), (doi:10.1063/1.4884684)

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Abstract

Stepped antiphase boundaries are frequently observed in Ti-doped Bi0.85Nd0.15FeO3, related to the novel planar antiphase boundaries reported recently. The atomic structure and chemistry of these steps are determined by a combination of high angle annular dark field and bright field scanning transmission electron microscopy imaging, together with electron energy loss spectroscopy. The core of these steps is found to consist of 4 edge-sharing FeO6 octahedra. The structure is confirmed by image simulations using a frozen phonon multislice approach. The steps are also found to be negatively charged and, like the planar boundaries studied previously, result in polarisation of the surrounding perovskite matrix.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:MacLaren, Dr Ian and Schaffer, Dr Bernhard and Craven, Professor Alan
Authors: MacLaren, I., Wang, L., Craven, A. J., Ramasse, Q. M., Schaffer, B., Kalantari, K., and Reaney, I. M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:APL Materials
Publisher:AIP Publishing
ISSN:2166-532X
ISSN (Online):2166-532X
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in APL Materials 2(066106)
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
539401Using aberration corrected STEM to study the atomic structure of incommensurate antiferroelectricsIan MaclarenEngineering & Physical Sciences Research Council (EPSRC)EP/I000879/1P&A - PHYSICS & ASTRONOMY