24th International Young Scientists Conference Optics and High Technology Material Science - SPO 2023 "STAND WITH UKRAINE"

Nanoscale Imaging of Ferroic Order with Soft X-ray Ptychography

17 Nov 2023, 11:10

25m

248 (Taras Shevchenko National University of Kyiv and Shizuoka University)

Invited Talk Multiferroics and Magnetoelectric Coupling

Speaker

Dr Tim A. Butcher (Paul Scherrer Institute, Switzerland)

Description

Soft X-ray ptychography is a scanning coherent diffractive imaging technique employed at synchrotron facilities. It relies on collecting diffraction patterns from overlapping illumination spots of the sample. Spatial resolutions in the order of 5 nm are achievable and ferroic order can be visualised by dichroic contrast with circularly or linearly polarised soft X-rays at the 3d transition metal L-edges. An example for the success of the technique is the imaging of the multiferroic domain structure of bismuth ferrite, which will be the focus of the presentation.