|Atomic-scale mapping of dipole frustration at 90 degrees charged domain walls in ferroelectric PbTiO3 films|
|Y. L. Tang; Y. L. Zhu; Y. J. Wang; W. Y. Wang; Y. B. Xu; W. J. Ren; Z. D. Zhang; X. L. Ma
|Source Publication||Scientific Reports
|Abstract||The atomic-scale structural and electric parameters of the 90 degrees domain-walls in tetragonal ferroelectrics are of technological importance for exploring the ferroelectric switching behaviors and various domain-wall-related novel functions. We have grown epitaxial PbTiO3/SrTiO3 multilayer films in which the electric dipoles at 90 degrees domain-walls of ferroelectric PbTiO3 are characterized by means of aberration-corrected scanning transmission electron microscopy. Besides the well-accepted head-to-tail 90 degrees uncharged domain-walls, we have identified not only head-to-head positively charged but also tail-to-tail negatively charged domain-walls. The widths, polarization distributions, and strains across these charged domain-walls are mapped quantitatively at atomic scale, where remarkable difference between these domain-walls is presented. This study is expected to provide fundamental information for understanding numerous novel domain-wall phenomena in ferroelectrics.|
|description.department||[tang, y. l.
; zhu, y. l.
; wang, y. j.
; wang, w. y.
; xu, y. b.
; ren, w. j.
; zhang, z. d.
; ma, x. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.
; ma, xl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.
Y. L. Tang,Y. L. Zhu,Y. J. Wang,et al. Atomic-scale mapping of dipole frustration at 90 degrees charged domain walls in ferroelectric PbTiO3 films[J]. Scientific Reports,2014,4.
Y. L. Tang.,Y. L. Zhu.,Y. J. Wang.,W. Y. Wang.,Y. B. Xu.,...&X. L. Ma.(2014).Atomic-scale mapping of dipole frustration at 90 degrees charged domain walls in ferroelectric PbTiO3 films.Scientific Reports,4.
Y. L. Tang,et al."Atomic-scale mapping of dipole frustration at 90 degrees charged domain walls in ferroelectric PbTiO3 films".Scientific Reports 4(2014).
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