Searched for: subject:"Neutron%5C+diffraction"
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Smith, A.L. (author), Kauric, G.P.T.F. (author), van Eijck, L. (author), Goubitz, K. (author), Clavier, N. (author), Wallez, Gilles (author), Konings, R.J.M. (author)
have been performed for the first time in this work and the crystal structure refined using the Rietveld method. The thermal expansion of this trigonal phase, in space group P3¯m1, measured using high temperature X-ray diffraction (XRD),...
journal article 2019
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Juhas, Pavol (author), Louwen, JN (author), van Eijck, L. (author), Vogt, ETC (author), Billinge, Simon J.L. (author)
journal article 2018
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Smith, A.L. (author), Verleg, M.N. (author), Vlieland, J. (author), de Haas, D.W. (author), Martin, Philippe M. (author), Rothe, Jörg (author), Capelli, E. (author), van Eijck, L. (author), More Authors (author)
The development at the Delft University of Technology (TU Delft, The Netherlands) of an experimental set-up dedicated to high-temperature in situ EXAFS measurements of radioactive, air-sensitive and corrosive fluoride salts is reported. A detailed description of the sample containment cell, of the furnace design, and of the measurement...
journal article 2018
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Miao, X.F. (author)
Mn-Fe-P-Si compounds are, to date, the most promising materials for refrigeration and energy conversion applications due to the combination of giant magnetocaloric effect (GMCE) and low material cost. The nature of magneto-elastic transition was studied on both length- and time-scales using neutron diffraction, muSR and Mӧssbauer spectroscopy...
doctoral thesis 2016
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Zhou, Z. (author)
doctoral thesis 2016
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Miao, X.F. (author), Caron, L. (author), Gercsi, Z. (author), Daoud-Aladine, A. (author), Van Dijk, N.H. (author), Brück, E. (author)
The thermal-history dependence of the magnetoelastic transition in (Mn,Fe)2(P,Si) compounds has been investigated using high-resolution neutron diffraction. As-prepared samples display a large difference in paramagnetic-ferromagnetic (PM-FM) transition temperature compared to cycled samples. The initial metastable state transforms into a lower...
journal article 2015
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Ohms, C. (author)
Welding is applied in many industrial sectors to join components, and has become an important manufacturing process because it enables the fabrication of structures that could not otherwise be constructed. Weld regions have inhomogeneous microstructures and are more susceptible to crack initiation and crack propagation than the surrounding base...
doctoral thesis 2013
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Strobl, M. (author), Tremsin, A.S. (author), Hilger, A. (author), Wieder, F. (author), Kardjilov, N. (author), Manke, I. (author), Bouwman, W.G. (author), Plomp, J. (author)
We report on measurements of spatial beam modulation of a polarized neutron beam induced by triangular precession regions in time-of-flight mode and the application of this novel technique spin-echo modulated small-angle neutron scattering (SEMSANS) to small-angle neutron scattering in the very small angle range. It is shown that this method can...
journal article 2012
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Ashkar, R. (author), Schaich, W.L. (author), De Haan, V.O. (author), Van Well, A.A. (author), Dalgliesh, R. (author), Plomp, J. (author), Pynn, R. (author)
Neutron spin-echo resolved grazing incidence scattering (SERGIS) measurements performed on a silicon diffraction grating with a rectangular profile were shown in our previous publications to be well explained by dynamical theory calculations. The theory is based on a Bloch wave expansion of the neutron wavefunction in the periodic layer of the...
journal article 2011
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Postma, H. (author), Amkreutz, L. (author), Borella, A. (author), Clarijs, M. (author), Kamermans, H. (author), Kockelmann, W. (author), Paradowska, A. (author), Schillebeeckx, P. (author), Visser, D. (author)
Two neutron based techniques, neutron resonance capture analysis (NRCA) and time-of-flight neutron-diffraction (TOF-ND) have been used to determine the elemental composition and structure of a precious and very well preserved all-metal sword from the Bronze Age. This Buggenum sword was on loan from the National Museum of Antiquities (NMA) in...
journal article 2009
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Borghols, W.J.H. (author), Wagemaker, M. (author), Lafont, U. (author), Kelder, E.M. (author), Mulder, F.M. (author)
journal article 2009
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Singh, S. (author)
The global energy issues can be solved by the abundantly available hydrogen on earth. Light metals are a compact and safe medium for storing hydrogen. This makes them attractive for vehicular use. Unfortunately, hydrogen uptake and release is slow in light metals at practical temperature and pressure conditions. Catalysts are known to accelerate...
doctoral thesis 2009
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Andersson, R. (author), Bouwman, W.G. (author), Luding, S. (author), De Schepper, I.M. (author)
Spin-echo small-angle neutron scattering is able to characterize powders in terms of their density density correlation function. Here we present a microstructural study on a fine cohesive powder undergoing uniaxial compression. As a function of compression, we measure the autocorrelation function of the density distribution. From these...
journal article 2008
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De Haan, V.O. (author), Van Well, A.A. (author), Plomp, J. (author)
The propagation of the mutual coherence function is a well known method to describe the effects of neutron’s propagation through scattering instruments. This method is extended with the description of the coherence matrix to account for neutron polarization effects and its propagation through an instrument. A propagation law for the coherence...
journal article 2008
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Fontaine-Vive, F. (author), Johnson, M.R. (author), Kearley, G.J. (author), Cowan, J.A. (author), Howard, J.A.K. (author), Parker, S.F. (author)
Recent work on understanding why protons migrate with increasing temperature in short, strong hydrogen bonds is extended here to three more organic, crystalline systems. Inelastic neutron scattering and density functional theory based simulations are used to investigate structure, vibrations, and dynamics of these systems as functions of...
journal article 2006
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Kearley, G.J. (author), Johnson, M.R. (author), Tomkinson, J. (author)
The lattice dynamics and molecular vibrations of benzene and deuterated benzene crystals are calculated from force constants derived from density-functional theory (DFT) calculations and compared with measured inelastic neutron-scattering spectra. A very small change (0.5%) in lattice parameter is required to obtain real lattice-mode frequencies...
journal article 2006
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Perego, R.C. (author), Blaauw, M. (author)
Hydrogen concentrations of 0 up to 350?mg/kg in a titanium alloy have been determined at National Institute of Standards and Technology (NIST) with neutron incoherent scattering (NIS) and with cold neutron prompt gamma activation analysis. The latter is a well-established technique, while the former was demonstrated earlier at NIST by counting...
journal article 2005
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Burns, G.R. (author), Favier, F. (author), Jones, D.J. (author), Rozière, J. (author), Kearley, G.J. (author)
Tetrathiafulvalene (TTF) is a key molecule in the family of charge-transfer salts of interest for their novel transport properties. The correspondence between transport property and electron-molecular vibration coupling requires that we understand the phonon density of states for these materials. Here we report the results of a low temperature...
journal article 2003
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Kemner, E. (author), Overweg, A.R. (author), Van Eijck, L. (author), Fitch, A.N. (author), Suard, E. (author), De Schepper, I.M. (author), Kearley, G.J. (author)
We study the inclusion of the metallocene ferrocene Fe(C5H5)2 molecules in the supercages of NaY zeolite. To find the exact location of the ferrocene molecules within the supercages we perform neutron and powder x-ray diffraction on bare NaY zeolite, and on NaY zeolite loaded with one or two ferrocene molecules per supercage. Using the...
journal article 2002
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Kemner, E. (author), De Schepper, I.M. (author), Kearley, G.J. (author), Jayasooriya, U.A. (author)
We calculate the spectrum of internal vibrations of a single ferrocene Fe(C5H5)2 molecule using ab initio density functional theory (without free parameters) and compare this with inelastic neutron scattering data on ferrocene in the solid state at 28 K. Due to the good agreement, we can assign each vibrational mode to each observed peak in the...
journal article 2000
Searched for: subject:"Neutron%5C+diffraction"
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