This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.104.174405 in citations.
Please use the identifier: http://hdl.handle.net/2128/29246 in citations.
Chiral order and multiferroic domain relaxation in Na Fe Ge 2 O 6
Chiral order and multiferroic domain relaxation in Na Fe Ge 2 O 6
The magnetic structure and the multiferroic relaxation dynamics of NaFeGe2O6 were studied by neutron scattering on single crystals partially utilizing polarization analysis. In addition to the previously reported transitions, the incommensurate spiral ordering of Fe3+ moments in the ac plane develop...
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Personal Name(s): | Biesenkamp, S. (Corresponding author) |
---|---|
Gorkov, D. / Schmidt, W. / Schmalzl, K. / Sidis, Y. / Becker, P. / Bohatý, L. / Braden, M. | |
Contributing Institute: |
Streumethoden; JCNS-2 JCNS-ILL; JCNS-ILL JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Published in: | Physical review / B, 104 (2021) 17, S. 174405 |
Imprint: |
Woodbury, NY
Inst.
2021
|
DOI: |
10.1103/PhysRevB.104.174405 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) (FZJ) Materials – Quantum, Complex and Functional Materials |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/29246 in citations.
The magnetic structure and the multiferroic relaxation dynamics of NaFeGe2O6 were studied by neutron scattering on single crystals partially utilizing polarization analysis. In addition to the previously reported transitions, the incommensurate spiral ordering of Fe3+ moments in the ac plane develops an additional component along the crystallographic b direction below T≈5K, which coincides with a lock-in of the incommensurate modulation. The quasistatic control of the spin-spiral handedness, respectively of the vector chirality, by external electric fields proves the invertibility of multiferroic domains down to the lowest temperature. Time-resolved measurements of the multiferroic domain inversion in NaFeGe2O6 reveal a simple temperature and electric-field dependence of the multiferroic relaxation that is well described by a combined Arrhenius-Merz relation, as it has been observed for TbMnO3. The maximum speed of domain wall motion is comparable to the spin-wave velocity deduced from an analysis of the magnon dispersion. |