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Interplay of inequivalent atomic positions in resonant x-ray diffraction of Fe3BO6
DOI:
10.1088/0953-8984/21/26/265402
Authors:
E.
Ovchinnikova
(Moscow State University)
,
V. E.
Dmitrienko
(AV Shubnikov Institute of Crystallography)
,
J. E.
Lorenzo
(Institut Louis Néel, CNRS)
,
J-L.
Hodeau
(Institut Louis Néel, CNRS)
,
A.
Kirfel
(University of Bonn)
,
Y.
Joly
(Institut Louis Néel, CNRS)
,
A. A.
A A Antonenko
(Moscow State University)
,
G.
Beutier
(Diamond Light Source)
,
A.
Bombardi
(Diamond Light Source)
,
S. P.
Collins
(Diamond Light Source)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Journal Of Physics: Condensed Matter
, VOL 21
State:
Published (Approved)
Published:
June 2009
Abstract: 'Forbidden' Bragg reflections of iron orthoborate Fe3BO6 were studied theoretically and experimentally in the vicinity of the iron K edge. Their energy spectra are explained as resulting from the interference of x-rays scattered from two inequivalent crystallographic sites occupied by iron ions. This particular structure property gives rise to complex azimuthal dependences of the reflection intensities in the pre-edge region as they result from the interplay of site specific dipole-quadrupole and quadrupole-quadrupole resonant scattering. Also evidenced is an anisotropic character of the absorption spectrum. Self-absorption correction to the diffraction data, as well as possible contributions of thermal vibrations and magnetic order, are discussed. Particular care is given to extracting clean spectra from the data, and it is demonstrated that excellent results can be obtained even from measurements that appear corrupted by several effects such as poor crystal quality and multiple scattering.
Journal Keywords: Absorption Spectra; Anisotropy; Borates; Bragg Reflection; Crystallography; Dipoles; Energy Spectra; Interference; Iron; Iron Compounds; Iron Ions; Multiple Scattering; Quadrupoles; Resonance Scattering; Self-Absorption; Simulation; X Radiation; X-Ray Diffraction
Subject Areas:
Materials,
Technique Development,
Physics
Instruments:
I16-Materials and Magnetism
Other Facilities: XMaS at ESRF
Added On:
22/06/2009 12:51
Discipline Tags:
Technique Development - Materials Science
Physics
Magnetism
Materials Science
Technical Tags:
Scattering
Resonant Soft X-ray Scattering (RSXS)