Atomic scale structure and chemistry of anti-phase boundaries in (Bi_0.85Nd_0.15)(Fe_0.9Ti_0.1)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 (Bi_0.85Nd_0.15)(Fe_0.9Ti_0.1)O₃ ceramics. Journal of Physics: Conference Series, 371, 012036. (doi: 10.1088/1742-6596/371/1/012036)

Abstract

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 (Bi_0.85Nd_0.15)(Fe_0.9Ti_0.1)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
• Status: Published
• Refereed: Yes
• 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: 1742-6588
• ISSN (Online): 1742-6596
• Published Online: 02 July 2012

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
53940	1	Using aberration corrected STEM to study the atomic structure of incommensurate antiferroelectrics	Ian MacLaren	Engineering & Physical Sciences Research Council (EPSRC)	EP/I000879/1	Physics and Astronomy