Title: Anisotropic Magnetic Fluctuations in the 3-K Antiferromagnets
Authors: CACIUFFO ROBERTOMAGNANI N.SANTINI P.CARRETTA S.AMORETTI G.BLACKBURN ElizabethENDERLE M.BROWN P.j.LANDER Gerard
Citation: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS vol. 310 p. 1698-1702
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2007
JRC N°: JRC37147
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC37147
Type: Contributions to Conferences
Abstract: The anisotropy of magnetic fluctuations propagating along the high-symmetry directions in cubic systems with 3-k magnetic order is analyzed within the random-phase approximation assuming anisotropic exchange interactions. Both transverse and longitudinal structures are considered, with reference to the UO2 and USb compounds, respectively. In the case of UO2, the spin-waves polarizations calculated for acoustic and optical branches are favorably compared with three-dimensional polarization analysis experiments carried out on a triple axis spectrometer. The overall spin-waves polarization behavior emerges as a consequence of the 3-k nature of the magnetic order, whatever the strength of the exchange coupling assumed.
JRC Institute:Institute for Transuranium Elements

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