Maghemite-like regions at the crossing of two antiphase boundaries in doped BiFeO3. Issue 3 (11th February 2016)

• Record Type: Journal Article
• Authors: Salih, J. M.; Wang, L. Q.; Ramasse, Q. M.; Jones, L.; Barthel, J.; Reaney, I. M.; Craven, A. J.; MacLaren, I.
• Is Part Of: Materials science and technology. Volume 32:Issue 3(2016)
• Page Start: 242
• Page End: 247
• Publication Date: 2016-02-11
• Subjects: Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1179/1743284715Y.0000000115
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : We report the observation of a novel structure at the point where two antiphase boundaries cross in a doped bismuth ferrite of composition (Bi0.85 Nd0.15 )(Fe0.9 Ti0.1 )O0.3 . The structure was investigated using a combination of high angle annular dark field imaging and electron energy loss spectroscopy spectrum imaging in the scanning transmission electron microscope. A three-dimensional model was constructed by combining the position and chemistry data with previous results and assuming octahedral coordination of all Fe and Ti atoms. The resulting structure shows some novel L-shaped arrangements of iron columns, which are coordinated in a similar manner to FeO6 octahedra in maghemite. It is suggested that this may lead to local ferromagnetic orderings similar to those in maghemite.