Imaging of a multiferroic domain wall in a non-multiferroic environment
Abstract
Compared with the surrounding bulk, the domain walls of materials exhibiting spontaneous long-range order exhibit significant changes in properties. The conducting domain walls in ferroelectrics are of great interest, for example, for their potential in rewriteable electric circuits. In contrast, it is rarely discussed that a ferroic material may also exhibit ferroic phases that are stable in the domain walls but not in the surrounding bulk material. Using Faraday rotation microscopy and second harmonic generation, we show that the domain walls in the antiferromagnetic and non-polar phase of Dy 0 . 7 Tb 0 . 3 FeO 3 carry spontaneous magnetization and spontaneous polarization. By optical deconvolution, we find a stable width, magnetization, and polarization, supporting the wall-like nature. Magnetic domain formation within the walls is visualized, and magnetic and electric wall-domain switching is concluded from field-poling experiments. With our study, we thus provide visual evidence of the existence of multiferroic domain walls in a non-multiferroic environment.
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BibTeX
@article{zemp2026imaging,
title = {{Imaging of a multiferroic domain wall in a non-multiferroic environment}},
author = {Yannik Zemp and Ehsan Hassanpour and Yusuke Tokunaga and Yasujiro Taguchi and Yoshinori Tokura and Thomas Lottermoser and Mads C. Weber and Manfred Fiebig},
journal = {Matter},
year = {2026},
month = oct,
doi = {10.1016/j.matt.2025.102051},
url = {https://hal.science/hal-05787034v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Imaging of a multiferroic domain wall in a non-multiferroic environment
AU - Yannik Zemp
AU - Ehsan Hassanpour
AU - Yusuke Tokunaga
AU - Yasujiro Taguchi
AU - Yoshinori Tokura
AU - Thomas Lottermoser
AU - Mads C. Weber
AU - Manfred Fiebig
PY - 2026
DA - 2026/10/08
JO - Matter
DO - 10.1016/j.matt.2025.102051
UR - https://hal.science/hal-05787034v1
AB - Compared with the surrounding bulk, the domain walls of materials exhibiting spontaneous long-range order exhibit significant changes in properties. The conducting domain walls in ferroelectrics are of great interest, for example, for their potential in rewriteable electric circuits. In contrast, it is rarely discussed that a ferroic material may also exhibit ferroic phases that are stable in the domain walls but not in the surrounding bulk material. Using Faraday rotation microscopy and second harmonic generation, we show that the domain walls in the antiferromagnetic and non-polar phase of Dy 0 . 7 Tb 0 . 3 FeO 3 carry spontaneous magnetization and spontaneous polarization. By optical deconvolution, we find a stable width, magnetization, and polarization, supporting the wall-like nature. Magnetic domain formation within the walls is visualized, and magnetic and electric wall-domain switching is concluded from field-poling experiments. With our study, we thus provide visual evidence of the existence of multiferroic domain walls in a non-multiferroic environment.
SN - 2590-2385
ER -