Probing multiferroic order parameters and domain population via nuclear spins

  • Quantifying domain population in multiferroics is required to understand domain nucleation/switching processes and achieve on-demand domain control. We report an approach based on nuclear magnetic resonance spectroscopy for the accurate measurement of volume fractions of multiferroic domains in bulk crystals. We demonstrate on a benchmarking system, GaV4Se8, that the electric quadrupole interaction of the 71Ga and the hyperfine field at the 51V nuclei are proper microscopic probes of the ferroelectric polarization and the ferromagnetic moment, respectively. We use the anisotropy of these local quantities to determine the multiferroic domain population, controlled here by both electric and magnetic fields. The sensitivity of this local-probe technique to site symmetries facilitates domain quantification in a wide range of anisotropic magnets, ferroelectrics, and multiferroics.

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Author:Markus Prinz-Zwick, T. Gimpel, Korbinian Geirhos, Somnath GharaORCiDGND, C. Steinbrecht, Vladimir TsurkanORCiDGND, Norbert BüttgenGND, István KézsmárkiORCiDGND
Frontdoor URL
Parent Title (English):Physical Review B
Publisher:American Physical Society (APS)
Place of publication:College Park, MD
Year of first Publication:2022
Publishing Institution:Universität Augsburg
Release Date:2022/01/28
First Page:014301
Institutes:Mathematisch-Naturwissenschaftlich-Technische Fakultät
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Experimentalphysik V
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):Deutsches Urheberrecht