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

Abstract

The ferroelectric domain structure of a freestanding BiFeO${}_3$ 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 L${}_3$-edge. The approach can be extended to the separation of different ferroic contributions in other multiferroic oxides.

References in corpus (2)

• Persistent anisotropy of the spin cycloid in BiFeO3 through ferroelectric switching
• Ptychographic nanoscale imaging of the magnetoelectric coupling in freestanding BiFeO${}_3$

Cited by in corpus (5)

• Nanoscale Domain Wall Dynamics in Micromagnetic Structures with Weak Perpendicular Anisotropy
• Single-photon counting pixel detector for soft X-rays
• Laser-driven resonant soft-X-ray scattering for probing picosecond dynamics of nanometre-scale order
• Soft x-ray ptychography with SOPHIE: Guide and instrumentation
• Supersampled scanning transmission X-ray microscopy for high-resolution vibration-independent time-resolved imaging