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@ARTICLE{Biesenkamp:1015305,
author = {Biesenkamp, S. and Schmalzl, K. and Becker, P. and Bohatý,
L. and Braden, M.},
title = {{M}ultiferroic domain relaxation in ( {NH} 4 ) 2 [ {F}e{C}l
5 ( {H} 2 {O} ) ]},
journal = {Physical review / B},
volume = {108},
number = {9},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2023-03649},
pages = {094417},
year = {2023},
abstract = {The molecular compound (NH4)2[FeCl5(H2O)] is a type-II
multiferroic material, in which incommensurate cycloidal
order directly induces ferroelectric polarization. The
multiferroic domain kinetics in (NH4)2[FeCl5(H2O)] were
studied by time-resolved neutron-diffraction experiments
utilizing neutron polarization analysis. The temperature-
and electric-field-dependent multiferroic relaxation obeys
the simple combined Arrhenius-Merz law, which was reported
to describe domain kinetics in the prototype multiferroics
TbMnO3 and NaFeGe2O6. However, the characteristic time scale
of the multiferroic relaxation is considerably larger than
those in TbMnO3 or NaFeGe2O6. Temperature-dependent
diffraction on (NH4)2[FeCl5(H2O)] reveals the emergence of
higher-order and commensurate magnetic contributions upon
cooling in the multiferroic phase in zero field. The good
agreement with studies of higher-harmonic contributions in
the deuterated material indicates that the isotopes only
possess a minor impact on the magnetic ordering. However, in
contrast to similar observations in multiferroic MnWO4, this
anharmonic modification of magnetic ordering does not depin
multiferroic domain walls or alter the temperature
dependence of the multiferroic relaxation.},
cin = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ILL},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ILL-20110128},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001097117700005},
doi = {10.1103/PhysRevB.108.094417},
url = {https://juser.fz-juelich.de/record/1015305},
}