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Regensburg 2019 – scientific programme

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 11: Multiferroics and Magnetoelectric coupling I (joint session MA/KFM)

KFM 11.5: Talk

Tuesday, April 2, 2019, 15:15–15:30, H37

Multiferroic domain inversion in NaFeGe2O6 — •Sebastian Biesenkamp1, Dmitry Gorkov1, Tobias Fröhlich1, Jonas Stein1, Karin Schmalzl2, Wolfgang Schmidt2, Yvan Sidis3, and Markus Braden11Institute of Physics II, University of Cologne — 2JCNS at ILL, Grenoble — 3Laboratoire Léon Brillouin, CEA-CNRS, CEA/Saclay

Multiferroic materials attracted a considerable interest during the last decade, as the electric control of chiral magnetism implies a promising potential of applicability in the field of data storage devices or sensors. Fundamentally for all kind of applications is the knowledge of the relaxation times of multiferroic domain inversion, when switching applied external electric fields. Here we report time-resolved neutron scattering studies of the relaxations times in the multiferroic pyroxene NaFeGe2O6. They can be followed over a broad timescale, ranging from microseconds to several minutes and we found that the temperature and electric field dependence of the rise-times can be well described by a simple activation and Merz’s law respectively.

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