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@INPROCEEDINGS{Thoma:897115,
author = {Thoma, Henrik and Hutanu, Vladimir and Angst, Manuel and
Roth, Georg},
title = {{R}econstruction of {M}agentization {D}ensity
{D}istributions in {A}ntiferromagnets with the new
{P}olarized {N}eutron {D}iffraction {S}etup on {POLI}},
reportid = {FZJ-2021-03613},
year = {2019},
abstract = {A dedicated polarized neutron diffraction (PND) setup,
using a symmetric-field high Tc superconducting magnet with
a maximal field of 2.2 T in combination with a ³He
polarizer and Mezei-type flipper, has been developed at the
instrument POLI. Each component is optimized by numerical
simulations and the complete setup is successfully tested
and calibrated.This new PND setup was used to collected
flipping-ratio (FR) data as function of the applied magnetic
field and temperature for different antiferromagnetic
compounds. A new advanced approach for the reconstruction of
maximum entropy spin density maps from FR measurements is
presented. Using this approach, 3D spin density maps can be
built for the first time not only for the paramagnetic, but
also for the antiferromagnetic phase. These 3D maps reveal
new features compared to the results from conventional
maximum entropy software and might be used to directly
visualize magnetic multipoles.},
month = {Jun},
date = {2019-06-24},
organization = {4th internal biennial science meeting
of the MLZ, Grainau (Germany), 24 Jun
2019 - 27 Jun 2019},
subtyp = {After Call},
cin = {JCNS-FRM-II / JARA-FIT / JCNS-4 / JCNS-2 / MLZ},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
$I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-4-20201012 /
I:(DE-Juel1)JCNS-2-20110106 / I:(DE-588b)4597118-3},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)POLI-HEIDI-20140101},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/897115},
}