Maghemite-like regions at the crossing of two antiphase boundaries in doped BiFeO3

J. M. Salih, L. Q. Wang, Q. M. Ramasse, L. Jones, J. Barthel, I. M. Reaney, A. J. Craven, I. MacLaren
2016 Materials Science and Technology  
We report the observation of a novel structure at the point where two antiphase boundaries cross in a doped bismuth ferrite of composition (Bi 0.85 Nd 0.15 )(Fe 0.9 Ti 0.1 )O 0.3 . 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
more » ... 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 FeO 6 octahedra in maghemite. It is suggested that this may lead to local ferromagnetic orderings similar to those in maghemite.
doi:10.1179/1743284715y.0000000115 fatcat:ebk4t37uxngmroy75mcbz5shqm