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Title: Extremely asymmetric diffraction as a method of determining magneto-optical constants for X-rays near absorption edges

The spectral dependence of the Bragg peak position under conditions of extremely asymmetric diffraction has been analyzed in the kinematical and dynamical approximations of the diffraction theory. Simulations have been performed for the L{sub 3} absorption edge of yttrium in a single-crystal YFe{sub 2} film; they have shown that the magneto-optical constants (or, equivalently, the dispersion corrections to the atomic scattering factor) for hard X-rays can be determined from this dependence. Comparison with the experimental data obtained for a Nb(4 nm)/YFe{sub 2}(40 nm〈110〉)/Fe(1.5 nm)/Nb(50 nm)/sapphire sample at the European Synchrotron Radiation Facility has been made.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ; ;  [4]
  1. Moscow State University (Russian Federation)
  2. Voronezh State University (Russian Federation)
  3. University of Lorraine, Institut Jean Lamour (UMR CNRS 7198) (France)
  4. European Synchrotron Radiation Facility (France)
Publication Date:
OSTI Identifier:
22472227
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 120; Journal Issue: 6; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; BRAGG CURVE; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; CORRECTIONS; DIFFRACTION; EUROPEAN SYNCHROTRON RADIATION FACILITY; FILMS; HARD X RADIATION; IRON ALLOYS; MONOCRYSTALS; SAPPHIRE; YTTRIUM; YTTRIUM ALLOYS