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Imaging ferroelectric domains with soft-x-ray ptychography at the oxygen K-edge

Butcher, Tim A. ; Phillips, Nicholas W. ; Wei, Chia Chun ; Chang, Shih Chao ; Beinik, Igor LU orcid ; Thånell, Karina LU ; Yang, Jan Chi ; Huang, Shih Wen ; Raabe, Jörg and Finizio, Simone (2025) In Physical Review Applied 23(1).
Abstract

The ferroelectric domain structure of a freestanding BiFeO3 film was visualized by ptychographic dichroic imaging with linearly polarized x-rays at the O K-edge around 530 eV. The dichroic contrast is maximized at the energy of the hybridization of the O 2p state and the Fe 3d orbitals, which is split by the octahedral crystal field of the perovskite structure. The microscopy images thus obtained complement the ptychographic imaging of the antiferromagnetic contribution at the Fe L3-edge. The approach can be extended to the separation of different ferroic contributions in other multiferroic oxides.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Applied
volume
23
issue
1
article number
L011002
publisher
American Physical Society
external identifiers
  • scopus:85214421066
ISSN
2331-7019
DOI
10.1103/PhysRevApplied.23.L011002
language
English
LU publication?
yes
id
bf195999-3ba1-44cb-9a04-a4f8c22cb64d
date added to LUP
2025-03-25 15:15:29
date last changed
2025-04-04 14:46:59
@article{bf195999-3ba1-44cb-9a04-a4f8c22cb64d,
  abstract     = {{<p>The ferroelectric domain structure of a freestanding BiFeO3 film was visualized by ptychographic dichroic imaging with linearly polarized x-rays at the O K-edge around 530 eV. The dichroic contrast is maximized at the energy of the hybridization of the O 2p state and the Fe 3d orbitals, which is split by the octahedral crystal field of the perovskite structure. The microscopy images thus obtained complement the ptychographic imaging of the antiferromagnetic contribution at the Fe L3-edge. The approach can be extended to the separation of different ferroic contributions in other multiferroic oxides.</p>}},
  author       = {{Butcher, Tim A. and Phillips, Nicholas W. and Wei, Chia Chun and Chang, Shih Chao and Beinik, Igor and Thånell, Karina and Yang, Jan Chi and Huang, Shih Wen and Raabe, Jörg and Finizio, Simone}},
  issn         = {{2331-7019}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Applied}},
  title        = {{Imaging ferroelectric domains with soft-x-ray ptychography at the oxygen K-edge}},
  url          = {{http://dx.doi.org/10.1103/PhysRevApplied.23.L011002}},
  doi          = {{10.1103/PhysRevApplied.23.L011002}},
  volume       = {{23}},
  year         = {{2025}},
}