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Träfflista för sökning "WFRF:(Pálsson Gunnar Karl) ;pers:(Wolff Max)"

Sökning: WFRF:(Pálsson Gunnar Karl) > Wolff Max

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1.
  • Adlmann, Franz A., et al. (författare)
  • Överlåtaren : a fast way to transfer and orthogonalize two-dimensional off-specular reflectivity data
  • 2016
  • Ingår i: Journal of applied crystallography. - 0021-8898 .- 1600-5767. ; 49, s. 2091-2099
  • Tidskriftsartikel (refereegranskat)abstract
    • Reflectivity measurements offer unique opportunities for the study of surfaces and interfaces, and specular reflectometry has become a standard tool in materials science to resolve structures normal to the surface of a thin film. Off-specular scattering, which probes lateral structures, is more difficult to analyse, because the Fourier space being probed is highly anisotropic and the scattering pattern is truncated by the interface. As a result, scattering patterns collected with (especially time-of-flight) neutron reflectometers are difficult to transform into reciprocal space for comparison with model calculations. A program package is presented for a generic two-dimensional transformation of reflectometry data into q space and back. The data are represented on an orthogonal grid, allowing cuts along directions relevant for theoretical modelling. This treatment includes background subtraction as well as a full characterization of the resolution function. The method is optimized for computational performance using repeatable operations and standardized instrument settings.
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2.
  • Xin, Xiao, et al. (författare)
  • Finite-Size Effects : Hydrogen in Fe/V(001) Superlattices
  • 2014
  • Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 113:4, s. 046103-
  • Tidskriftsartikel (refereegranskat)abstract
    • We investigate the effect of finite size on phase boundaries of hydride formation in ultrathin metallic films, using Fe/V(001) superlattices as a model system. The critical temperature is determined to scale linearly with the inverse thickness of the V layers. The decrease of the ordering temperature with decreasing layer thickness arises from the missing H neighbors at the interfaces, analogous to observed finite-size effects in magnetic layers and nanosized ice crystals.
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  • Resultat 1-2 av 2
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Wolff, Max (2)Ta bort avgränsningen
Pálsson, Gunnar Karl (2)
Hjörvarsson, Björgvi ... (1)
Adlmann, Franz A. (1)
Gutfreund, P. (1)
Ankner, J. F. (1)
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Bilheux, J. C. (1)
Kawecki, M. (1)
Xin, Xiao (1)
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Uppsala universitet (2)
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