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|Title:||Anisotropic Magnetic Fluctuations in the 3-K Antiferromagnets|
|Authors:||CACIUFFO ROBERTO; MAGNANI N.; SANTINI P.; CARRETTA S.; AMORETTI G.; BLACKBURN Elizabeth; ENDERLE M.; BROWN P.j.; LANDER Gerard|
|Citation:||JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS vol. 310 p. 1698-1702|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|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:||Nuclear Safety and Security|
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