In:
Journal of Synchrotron Radiation, International Union of Crystallography (IUCr), Vol. 22, No. 5 ( 2015-09-01), p. 1207-1214
Abstract:
The resonant scattering and diffraction beamline P09 at PETRA III at DESY is equipped with a 14 T vertical field split-pair magnet. A helium-3 refrigerator is available that can be fitted inside the magnet's variable-temperature insert. Here the results of a series of experiments aimed at determining the beam conditions permitting operations with the He-3 insert are presented. By measuring the tetragonal-to-orthorhombic phase transition occurring at 2.1 K in the Jahn–Teller compound TmVO 4 , it is found that the photon flux at P09 must be attenuated down to 1.5 × 10 9 photons s −1 for the sample to remain at temperatures below 800 mK. Despite such a reduction of the incident flux and the subsequent use of a Cu(111) analyzer, the resonant X-ray magnetic scattering signal at the Tm L III absorption edge associated with the spin-density wave in TmNi 2 B 2 C below 1.5 K is intense enough to permit a complete study in magnetic field and at sub-Kelvin temperatures to be carried out.
Type of Medium:
Online Resource
ISSN:
1600-5775
DOI:
10.1107/S1600577515014149
Language:
Unknown
Publisher:
International Union of Crystallography (IUCr)
Publication Date:
2015
detail.hit.zdb_id:
2021413-3
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