The instrument DNS: polarization analysis for diffuse neutron scattering

Schweika, W.; Böni, P.

doi:10.1016/s0921-4526(00)00858-9

Cited by 54 publications

(47 citation statements)

References 11 publications

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“…1 4 Sb 11 Sn, respectively. The measurements were performed on the cold neutron time-of-flight instrument DNS [6]. At the chosen wavelength of 4:6 A, the usable energy range is limited from ÿ3:8 to 25 meV in energy gained by the neutrons.…”

mentioning

confidence: 99%

Einstein Oscillators in Thallium Filled Antimony Skutterudites

et al. 2003

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all show a sharp peak in the vibrational density of states at 57 2 K, which is absent in the unfilled skutterudite CoSb 3 . Heat capacity measurements on Tl 0:8 Co 4 Sb 11 Sn as compared to CoSb 3 are consistent with the presence of a localized vibrational mode associated with the ''rattling'' thallium atoms in this filled skutterudite compound. Both results are well described by a localized Einstein mode model with an Einstein temperature E of 53 1 K. These data provide perhaps the clearest example of local mode behavior in a concentrated metallic system.

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confidence: 99%

Einstein Oscillators in Thallium Filled Antimony Skutterudites

et al. 2003

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“…Whether constant wavelength or spallation, polarisation analysis can be used to separate magnetic from structural diffuse scattering [54][55][56][57].…”

Section: Neutronmentioning

confidence: 99%

Monte Carlo Modelling of Single-Crystal Diffuse Scattering from Intermetallics

Goossens

2016

Metals

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Single-crystal diffuse scattering (SCDS) reveals detailed structural insights into materials. In particular, it is sensitive to two-body correlations, whereas traditional Bragg peak-based methods are sensitive to single-body correlations. This means that diffuse scattering is sensitive to ordering that persists for just a few unit cells: nanoscale order, sometimes referred to as "local structure", which is often crucial for understanding a material and its function. Metals and alloys were early candidates for SCDS studies because of the availability of large single crystals. While great progress has been made in areas like ab initio modelling and molecular dynamics, a place remains for Monte Carlo modelling of model crystals because of its ability to model very large systems; important when correlations are relatively long (though still finite) in range. This paper briefly outlines, and gives examples of, some Monte Carlo methods appropriate for the modelling of SCDS from metallic compounds, and considers data collection as well as analysis. Even if the interest in the material is driven primarily by magnetism or transport behaviour, an understanding of the local structure can underpin such studies and give an indication of nanoscale inhomogeneity.

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“…For example, one has ∼ 0.4 sr at D7 [9,10], ∼ 0.1 sr at DNS [11,12], and the WASP project at the Institut LaueLangevin (ILL), which is currently under construction, is aiming for ∼ 0.2 sr [13]. These instruments use supermirror analyzers whereas the crystal analyzer instrument MACS at the National Institute for Standards and Technology (NIST) uses an array of wide angle 3 He analyzer cells [14].…”

Section: Introductionmentioning

confidence: 99%

Neutronxyz– polarization analysis at a time-of-flight instrument

Ehlers

Stewart

Deen

et al. 2015

EPJ Web of Conferences

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Abstract. When implementing a dedicated polarization analysis setup at a neutron time-of-flight instrument with a large area detector, one faces enormous challenges. Nevertheless, significant progress has been made towards this goal over the last few years. This paper addresses systematic limitations of the traditional method that is used to make these measurements, and a possible strategy to overcome these limitations. This will be important, for diffraction as well as inelastic experiments, where the scattering occurs mostly out-of-plane.

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The instrument DNS: polarization analysis for diffuse neutron scattering

Cited by 54 publications

References 11 publications

Einstein Oscillators in Thallium Filled Antimony Skutterudites

Einstein Oscillators in Thallium Filled Antimony Skutterudites

Monte Carlo Modelling of Single-Crystal Diffuse Scattering from Intermetallics

Neutronxyz– polarization analysis at a time-of-flight instrument

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