Structural and Chemical Insights into Designer Defects in Tetragonal-like Epitaxial BiFeO3 Thin Films
Yasuhiro Sakamoto,
John E. Daniels,
Nagarajan Valanoor
et al.
Abstract:In ferroelectric oxides, it is well-known that defect engineering can be exploited to stabilize novel polar phases. In bismuth ferrite (BiFeO 3 ; BFO) epitaxial films, coherent bismuth oxide inclusions stabilize a pure tetragonal-like (T') phase for film thicknesses greater than 70 nm. Here, we investigate the atomic and chemical structure of such bismuth oxide inclusions within T' BFO thin films grown on (001) LaAlO 3 substrates using atomic-resolution aberration-corrected scanning transmission electron micro… Show more
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