Title: Spherical Neutron Spin Polarimetry of Anisotropic Magnetic Fluctuations in UO2
Authors: BLACKBURN ElizabethCACIUFFO RobertoMAGNANI N.SANTINI P.BROWN P.j.ENDERLE M.LANDER Gerard
Citation: PHYSICAL REVIEW B-CONDENSED MATTER vol. B-72 no. 184411 p. 1-10
Publisher: AMER INST PHYSICS
Publication Year: 2005
JRC Publication N°: JRC30244
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC30244
Type: Articles in Journals
Abstract: The anisotropy of magnetic fuctuations propagating along the symmetric directions in the ordered phase of uranium dioxide has been studied by applying the spherical neutron-spin polarimetry technique to inelastic neutron scattering. The dependence of uctuation amplitudes and directions as a function of the quasi-particle wavevector q has been investigated along the main crystallographic directions. The observed behaviour is discussed in relation to the spin dynamics of the 3-k transverse magnetic structure. The observed polarization behavior of the spin waves, and in particular the acoustic mode, is shown to be a natural consequence of the transverse 3-k magnetic structure.
JRC Institute:Institute for Transuranium Elements

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