Title: Coherent magnetic diffraction from the uranium M4 edge in the multi-k magnet, USb
Authors: LIM J. A.BLACKBURN E.BEUTIER G.LIVET F.MAGNANI NicolaBOMBARDI A.CACIUFFO RobertoLANDER G.h.
Citation: JOURNAL OF PHYSICS: CONFERENCE SERIES vol. 519 no. 1 (2014) p. 012010
Publisher: INSTITUTE OF PHYSICS
Publication Year: 2014
JRC N°: JRC84793
ISSN: 1742-6588
URI: http://iopscience.iop.org/1742-6596/519/1/012010/pdf/1742-6596_519_1_012010.pdf
http://rexs2013.org/REXS2013/Proceedings.html
http://iopscience.iop.org/1742-6596/519/1/012010
http://publications.jrc.ec.europa.eu/repository/handle/JRC84793
DOI: 10.1088/1742-6596/519/1/012010
Type: Articles in periodicals and books
Abstract: The slow magnetic dynamics, from seconds to kiloseconds, of the canonical 3-k antiferromagnet USb have been probed, using X-ray photon correlation spectroscopy (XPCS). In this work, XPCS is combined with resonant X-ray diraction to focus on scattering at an antiferromagnetic Bragg peak. High quality coherent magnetic diraction patterns were recorded (speckle contrast of 88%) and magnetic domains were observed; the number of domains increases on warming to T 160 K, where the spin waves soften to zero frequency, and again on warming to TN = 218 K. The intensity auto-correlation, g2(t), is primarily static over 1000 s, with a small dynamical process (change of 0:4%) that increases in rate close to the transitions.
JRC Directorate:Nuclear Safety and Security

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