Atomic scale structure and chemistry of anti-phase boundaries in (Bi0.85Nd0.15)(Fe0.9Ti0.1)O3 ceramics

Wang, L.Q., Schaffer, B., MacLaren, I. , Miao, S., Craven, A.J. and Reaney, I.M. (2012) Atomic scale structure and chemistry of anti-phase boundaries in (Bi0.85Nd0.15)(Fe0.9Ti0.1)O3 ceramics. Journal of Physics: Conference Series, 371, 012036. (doi: 10.1088/1742-6596/371/1/012036)

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High resolution scanning transmission electron microscope (HRSTEM) and electron energy loss spectroscopy spectrum imaging (EELS SI) methods have been successfully applied to the analysis of planar antiphase boundaries in (Bi0.85Nd0.15)(Fe0.9Ti0.1)O3 (BNFT) ceramics. Two distinct structures for these boundaries have been identified, one of which has never previously been reported for perovskites. This latter form has a characteristic ladder structure in the core, and comes in stepped and unstepped forms. Atomic resolution spectrum imaging reveals that excess Ti is key to the formation of these ladder-structured antiphase boundaries.

Item Type:Articles
Keywords:75.80.+q Magnetomechanical and magnetoelectric effects, magnetostriction 77.84.Dy Niobates, titanates, tantalates, PZT ceramics, etc. 77.84.Bw Elements, oxides, nitrides, borides, carbides, chalcogenides, etc. 77.80.-e Ferroelectricity and antiferroelectricity 79.20.Uv Electron energy loss spectroscopy
Glasgow Author(s) Enlighten ID:MacLaren, Dr Ian
Authors: Wang, L.Q., Schaffer, B., MacLaren, I., Miao, S., Craven, A.J., and Reaney, I.M.
Subjects:Q Science > QC Physics
T Technology > TN Mining engineering. Metallurgy
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Materials and Condensed Matter Physics
Journal Name:Journal of Physics: Conference Series
Journal Abbr.:J. Phys. Conf. Ser.
Publisher:Institute of Physics
ISSN (Online):1742-6596
Published Online:02 July 2012

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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/I000879/1Physics and Astronomy