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X-ray imaging of ferroic domains

Scientific illustration.
Imaging of ferroelastic domain dynamics in a CsPbBr3 perovskite nanowire as the temperature is ramped across a phase transition [Marcal 2020]. The Bragg peak and the domain pattern change as the temperature crosses the orthorhombic to tetragonal phase transition at 80C.

 

Scientific illustration.
3D reconstruction of two ferroelastic domains in a CsPbBr3 nanoparticle [Dzhigaev 2021].

We have recently shown that it is possible to image ferroelastic domains inside nanowires of the metal halide perovskite CsPbBr3 [Marcal 2020] [Marcal 2024]. High temporal resolution can be achieved with full-field methods [Marcal 2022]. A presentation by Lucas Marcal on these results can be found here. Similar methods can be used to image ferrolastic domains induced by AFM [Marcal 2021]. We also demonstrated 3D imaging of ferroelastic domains in CsPbBr3 nanoparticles [Dzhigaev 2021]. A presentation about these results can be found here. Dmitry Dzhigaev has also made a longer presentation about the method, Bragg Coherent Diffraction Imaging, found here. Currently, we are also working on ferroelectric materials.

Last updated: 15 Apr 2025 | mathieu [dot] gisselbrecht [at] sljus [dot] lu [dot] se