E9: The new high-resolution powder diffractometer at BENSC

Többens, Daniel M.; Stüßer, N.

doi:10.1080/10448630108244993

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…The neutron wavelength was 1.5831(1) Å. A detailed description of FIREPOD has been published by Többens and Stüßer [14]. An additional pattern at a longer wavelength of 2.447(1) Å was obtained on the E6 focusing diffractometer at BENSC.…”

Section: Experimental Methodsmentioning

confidence: 99%

Magnetic ordering in ErFe₆Sn₆

Cadogan

Ryan

Može

et al. 2003

J. Phys.: Condens. Matter

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We have determined the magnetic structures of the Er and Fe sublattices in ErFe 6 Sn 6 by high-resolution neutron powder diffraction and Mössbauer spectroscopy on the 166 Er, 57 Fe and 119 Sn isotopes. The crystal space group is orthorhombic Cmcm. The Fe sublattice is antiferromagnetic with a Néel temperature of 560(5) K and it orders along the [100] direction with a magnetic space group C P m c m and a propagation vector [010]. The Fe magnetic moment at 1.5 K is 2.4 ± 0.6 µ B . The Er sublattice orders independently of the Fe sublattice at 4.8 ± 0.4 K and comprises a ferromagnetic mode along [100] and an antiferromagnetic mode along [010], with a propagation vector [0 1 2 0] i.e. cell-doubling along [010]. The magnetic space group of the Er sublattice within the magnetic unit cell is Pbc m , a subgroup of Cmcm. At 1.5 K the ferromagnetic and antiferromagnetic components of the Er 3+ magnetic moment (determined by a combination of neutron diffraction and magnetization measurements) are 5.9 ± 0.1 and 4.9 ± 1.5 µ B , respectively, yielding a net Er moment of 7.7 ± 1.5 µ B . The Er 3+ magnetic moment derived from 166 Er Mössbauer spectroscopy is 8.5(1) µ B .

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Section: Experimental Methodsmentioning

confidence: 99%

Magnetic ordering in ErFe₆Sn₆

Cadogan

Ryan

Može

et al. 2003

J. Phys.: Condens. Matter

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“…Institute or reactor Country Resolution PEARL [4] TU Delft Netherlands 1.6% SPODI [5] FRM II Germany 1.3% D20 [7] ILL France ~1% D2B [22] ILL France 0.5% BT1 [23] NIST America 1.7% * iMATERIA [24] J-PARC Japan 1.6% E9 [25] BENSC Germany ~2% * This value is calculated for one of its high resolution model: α 1 = α 3 = 7 , α 2 = 20 , β = 0.36 • , θ M = 37.5 • .…”

Section: Diffractometermentioning

confidence: 99%

High resolution neutron diffractometer HRND at research reactor CMRR

et al. 2018

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The high resolution neutron diffractometer HRND is located at the 20 MW China Mianyang Research Reactor (CMRR), which is a neutron powder diffractometer especially dedicated to crystal and magnetic structure studies for polycrystalline powder samples. A vertical focusing Ge (511) monochromator produce a monochromatic neutron beam with a wavelength of 1.885 Å at a fixed take-off angle of 120̂. An array of 64 equidistant 3He filled proportional counters can acquire diffraction patterns with a large-scale diffraction angle range over 160̂. As all the Soller slit collimators of HRND have a collimation angle of 10′ and the monochromator has an average mosaicity of 0.359̂, HRND obtains a best resolution of about 1.6\textperthousand based on experiments, which makes the resolution of HRND can compete with the mainstream-level high resolution neutron powder diffractometers in the world. Equipped with a cryostat and a furnace, HRND allows structural characterization in an extremely broad temperature range. The details of the configuration and performance of the instrument are reported along with its specifications and performance assessments in the present paper.

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