001     859470
005     20210130000307.0
037 _ _ |a FZJ-2019-00326
041 _ _ |a English
100 1 _ |a Thoma, Henrik
|0 P:(DE-Juel1)176326
|b 0
|e First author
|u fzj
111 2 _ |a Polarised Neutrons for Condensed-Matter Investigations 2018
|g PNCMI 2018
|c Abingdon
|d 2018-07-03 - 2018-07-06
|w England
245 _ _ |a Setup for polarized neutron diffraction using a novel high-Tc superconducting magnet at instrument POLI at MLZ
260 _ _ |c 2018
336 7 _ |a Conference Paper
|0 33
|2 EndNote
336 7 _ |a INPROCEEDINGS
|2 BibTeX
336 7 _ |a conferenceObject
|2 DRIVER
336 7 _ |a CONFERENCE_POSTER
|2 ORCID
336 7 _ |a Output Types/Conference Poster
|2 DataCite
336 7 _ |a Poster
|b poster
|m poster
|0 PUB:(DE-HGF)24
|s 1547716914_7247
|2 PUB:(DE-HGF)
|x After Call
520 _ _ |a Polarized neutron diffraction (PND) is a powerful method to investigate magnetic structures. PND can be used for very precise magnetization measurements even for weak magnetic contributions. It allows the high-quality determination of magnetic form factors, to untangle complex (e.g. chiral) magnetic structures, and to follow the movement of magnetic domains. In this technique, spin flip measurements are carried out on a sample, located in a strong magnetic field. Optionally, the scattered beam can be analyzed to perform a polarization analysis along the given field direction at the sample.A new PND setup has been developed for the hot neutron single crystal diffractometer POLI [1] at MLZ. This setup consists of a ³He spin filter cell [2] for polarization, a Mezei flipper optimized for short-wavelength neutrons, and a new high Tc superconducting magnet producing fields up to 2.2 T. Because the magnet provides a symmetric field configuration, a dedicated guide field system was designed in order to avoid neutron depolarization in the zero-field node. The polarization transport efficiency of the whole setup was numerically simulated and optimized [3].By using either a Heusler crystal at the sample position or a second spin filter cell as analyzer, the polarization losses in the setup were confirmed to be below 2% over the total field range of the magnet. With the ³He cell as polarizer, a beam polarization over 90% at a wavelength as short as 0.7 Å is reliably reachable. The stray fields of the magnet did not affect the relaxation time T1 of the ³He spin filter polarizer. Typical T1 values above 100 h are measured. . First experiments with antiferromagnetic and paramagnetic samples using the new setup have been successfully performed. Using the CCSL software, reconstruction of the field induced spin density distribution in the weak ferromagnet MnCO3 was performed in the paramagnetic state and compared to the literature data. Our results shows the high performance and good resolution of the setup.[1] V. Hutanu, Heinz Maier-Leibnitz Zentrum, Journal of large-scale research facilities, 1, A16 (2015)[2] V. Hutanu, M. Meven, S. Masalovich et al., J. Phys.: Conf. Ser., 294, 012012 (2011)[3] H. Thoma, W. Luberstetter, J. Peters, and V. Hutanu, J. Appl. Cryst. 51, 17-26 (2018)
536 _ _ |a 524 - Controlling Collective States (POF3-524)
|0 G:(DE-HGF)POF3-524
|c POF3-524
|f POF III
|x 0
536 _ _ |a 6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621)
|0 G:(DE-HGF)POF3-6212
|c POF3-621
|f POF III
|x 1
536 _ _ |0 G:(DE-HGF)POF3-6G15
|f POF III
|x 2
|c POF3-6G15
|a 6G15 - FRM II / MLZ (POF3-6G15)
536 _ _ |a 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
|0 G:(DE-HGF)POF3-6G4
|c POF3-623
|f POF III
|x 3
650 2 7 |a Condensed Matter Physics
|0 V:(DE-MLZ)SciArea-120
|2 V:(DE-HGF)
|x 0
650 2 7 |a Crystallography
|0 V:(DE-MLZ)SciArea-240
|2 V:(DE-HGF)
|x 1
650 2 7 |a Instrument and Method Development
|0 V:(DE-MLZ)SciArea-220
|2 V:(DE-HGF)
|x 2
650 2 7 |a Magnetism
|0 V:(DE-MLZ)SciArea-170
|2 V:(DE-HGF)
|x 3
650 1 7 |a Instrument and Method Development
|0 V:(DE-MLZ)GC-2002-2016
|2 V:(DE-HGF)
|x 0
650 1 7 |a Magnetic Materials
|0 V:(DE-MLZ)GC-1604-2016
|2 V:(DE-HGF)
|x 1
693 _ _ |a Forschungs-Neutronenquelle Heinz Maier-Leibnitz
|e POLI: Polarized hot neutron diffractometer
|f SR9a
|1 EXP:(DE-MLZ)FRMII-20140101
|0 EXP:(DE-MLZ)POLI-HEIDI-20140101
|5 EXP:(DE-MLZ)POLI-HEIDI-20140101
|6 EXP:(DE-MLZ)SR9a-20140101
|x 0
700 1 _ |a Hutanu, Vladimir
|0 P:(DE-Juel1)164298
|b 1
|e Corresponding author
|u fzj
700 1 _ |a Deng, Hao
|0 P:(DE-HGF)0
|b 2
700 1 _ |a Roth, Georg
|0 P:(DE-HGF)0
|b 3
|e Last author
909 C O |o oai:juser.fz-juelich.de:859470
|p VDB:MLZ
|p VDB
910 1 _ |a Forschungszentrum Jülich
|0 I:(DE-588b)5008462-8
|k FZJ
|b 0
|6 P:(DE-Juel1)176326
910 1 _ |a Forschungszentrum Jülich
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913 1 _ |a DE-HGF
|b Key Technologies
|l Future Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)
|1 G:(DE-HGF)POF3-520
|0 G:(DE-HGF)POF3-524
|2 G:(DE-HGF)POF3-500
|v Controlling Collective States
|x 0
|4 G:(DE-HGF)POF
|3 G:(DE-HGF)POF3
913 1 _ |a DE-HGF
|b Forschungsbereich Materie
|l Von Materie zu Materialien und Leben
|1 G:(DE-HGF)POF3-620
|0 G:(DE-HGF)POF3-621
|2 G:(DE-HGF)POF3-600
|v In-house research on the structure, dynamics and function of matter
|9 G:(DE-HGF)POF3-6212
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913 1 _ |a DE-HGF
|9 G:(DE-HGF)POF3-6G15
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|v FRM II / MLZ
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|3 G:(DE-HGF)POF3
|2 G:(DE-HGF)POF3-600
|b Forschungsbereich Materie
|l Großgeräte: Materie
913 1 _ |a DE-HGF
|b Forschungsbereich Materie
|l Von Materie zu Materialien und Leben
|1 G:(DE-HGF)POF3-620
|0 G:(DE-HGF)POF3-623
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|v Facility topic: Neutrons for Research on Condensed Matter
|9 G:(DE-HGF)POF3-6G4
|x 3
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914 1 _ |y 2018
920 _ _ |l yes
920 1 _ |0 I:(DE-Juel1)JCNS-FRM-II-20110218
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920 1 _ |0 I:(DE-Juel1)JCNS-2-20110106
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920 1 _ |0 I:(DE-82)080009_20140620
|k JARA-FIT
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980 _ _ |a poster
980 _ _ |a VDB
980 _ _ |a I:(DE-Juel1)JCNS-FRM-II-20110218
980 _ _ |a I:(DE-Juel1)JCNS-2-20110106
980 _ _ |a I:(DE-82)080009_20140620
980 _ _ |a UNRESTRICTED


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