Results 121 to 130 of about 7,185 (158)

The resonant X-ray diffraction in Co-Åkermanite: Theory and experiment

Crystallography Reports, 2006
The structural factors for X-ray resonant diffraction near the K-absorption edge of cobalt in Co-akermanite have been calculated with allowance for the known data about its incommensurate 2D modulation. It is shown that the local symmetry of Co atoms in the basic structure does not allow any pure resonant reflections in the dipole-dipole approximation.
BINDI, LUCA, V. DMITRIENKO, E. OVCHINNIKOVA, Y. SOEJIMA   +3 more
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Atom distribution in SnSb2Te4 by resonant X-ray diffraction

Solid State Sciences, 2011
Abstract The atom distribution in SnSb 2 Te 4 ( R 3 ¯ m , a  = 4.298(1), c  = 41.57(1) A) has been elucidated by resonant single-crystal diffraction using synchrotron radiation with wavelengths near the K absorption edges of the elements present and additional non-resonant data.
Oliver Oeckler, Matthias N. Schneider, Felix Fahrnbauer, Gavin Vaughan   +3 more
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Non-resonant X-ray Bragg diffraction by CeB6

Physica B: Condensed Matter, 2004
Abstract Non-resonant X-ray diffraction measurements have been made on a dense Kondo material CeB 6 . A series of (n, n, n) reflections with n =half integers has been observed in phase III of this compound. The magnetic field dependence of these reflections at 1.6 K as well as the temperature dependence in zero field have been ...
Y. Tanaka, U. Staub, Y. Narumi, K. Katsumata, V. Scagnoli, S. Shimomura, Y. Tabata, Y. Onuki   +7 more
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Occupancy Determination from Resonant X-ray Diffraction

Inorganic Chemistry
We analyze the effect of integrated resolution, data scaling, structural refinement, and crystal symmetry on the extracted scattering perturbations and their uncertainties for anomalous (resonant) X-ray diffraction on mixed-metal molecular clusters. We probe the metal constituency, substitutional homogeneity, and positional disorder of both biased and ...
Claire E. Casaday, Cristin E. Juda, Shao-Liang Zheng, Simon J. Teat, Tieyan Chang, Yu-Sheng Chen, Theodore A. Betley   +6 more
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Polarization analyzer for resonant x-ray diffraction (abstract)

Review of Scientific Instruments, 2002
A polarization analyzer has been designed for soft x-ray resonant diffraction experiments at the S K edge. The Bragg angle of graphite (0001) at the S K edge is 48°, which makes it perfectly suited as polarization analyzer. Two graphite (0001) crystals (12×12×2 mm3) are mounted on small tangent-arm driven spring loaded stages with their diffraction ...
W. A. Caliebe, A. Lenhard, D. P. Siddons, R. Pindak   +3 more
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Investigations of the system by Mössbauer resonance and x-ray diffraction

Superconductor Science and Technology, 1996
A series of non-superconducting (Pb-2213) samples with x = 0, 0.25, 0.5, 0.75 and 1.00 were synthesized under a nitrogen atmosphere. Both as-synthesized and oxygen-annealed samples were studied. The phase purity, lattice parameters, and crystal structure were analysed by x-ray diffraction measurements.
J Lindén, M Lippmaa, T Karlemo, M Karppinen, L Niinistö   +4 more
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Resonant and Magnetic X-Ray Diffraction

2014
Hard X-rays magnetic scattering takes advantage of the characteristic properties of X-ray beams at third generation synchrotron radiation facilities: tuneable photon energy, controllable polarization and polarization analysis, excellent stability and brilliance.
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Borman effect in resonant diffraction of X-rays

Journal of Experimental and Theoretical Physics, 2013
A dynamic theory of resonant diffraction (occurring when the energy of incident radiation is close to the energy of the absorption edge of an element in the composition of a given substance) of synchronous X-rays is developed in the two-wave approximation in the coplanar Laue geometry for large grazing angles in perfect crystals.
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Resonance energy shifts during nuclear Bragg diffraction of x rays

Physical Review Letters, 1989
We have observed dramatic changes in the time distribution of synchrotron x rays resonantly scattered from $^{57}\mathrm{Fe}$ nuclei in a crystal of yttrium iron garnet, which depend on the deviation angle of the incident radiation from the Bragg angle.
, Arthur, , Brown, , Brown, , Ruby
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Neutron and Resonant X-ray Diffraction Studies of Zirconolite-2M

MRS Proceedings, 2008
AbstractZirconolite (nominally CaZrTi2O7) is a constituent phase of potential waste forms for the safe immobilisation of actinide wastes. Structural studies of such materials provide important information about cation ordering, lattice parameters, and strain effects, and provide input into the modelling of alpha decay damage and the development of ...
Karl R. Whittle, Katherine L. Smith, Neil C. Hyatt, Gregory R. Lumpkin   +3 more
openaire   +1 more source