Bulg. J. Phys. vol.34 no.s1 (2007), pp. 218-218



Neutron Powder Diffraction and Magnetic Structures

F. Bouree
Laboratoire Léon Briluen [CEA-CNRS], CEA/Saclay, F-91190 Gif-sur-Yvette, France
Abstract. Magnetic neutron powder diffraction is, and will remain in the future, the most straightforward technique to get magnetic structures, as a function of temperature, pressure... The successive steps of a magnetic structure determination (description of the microscopic arrangement of magnetic moments in a crystal) will be described in this presentation, from the experiment (2-axis diffractometer and sample environment) to the results: commensurate and/or incommensurate long-range/short-range magnetic order, via data analysis (selection rules, Bertaut's representation analysis, Rietveld \textsc{Fullprof} refinement...). Some examples are selected, among terbium fluorides [1] and in the R2T2X system (R = Lanthanide; T = Transition metal; X = In, Sn).) [2].
References
[1.] M. Josse (2003) PhD, Université de Clermont-Ferrand, France.
[2.] D. Laffargue (1997) PhD, Université de Bordeaux, France

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