Phys. Rev. B 73, 134419 (2006)
(4 pages)
Dynamical magnetic properties of Cr in an Fe/Cr(110) multilayer
D. Aernout,1 C. L'abbé,1 M. Rots,1 H. Fritzsche,2 and J. Meersschaut1
1Instituut voor Kern- en Stralingsfysica and INPAC, K. U. Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
2National Research Council Canada, Canadian Neutron Beam Centre, Chalk River Laboratories, Chalk River, Ontario K0J 1J0, Canada
(Received 22 November 2005; revised 22 February 2006; published 21 April 2006)
The magnetism of a 26-nm-thick Cr spacer layer, in an Fe/Cr(110) multilayer previously characterized via neutron diffraction, is studied with perturbed angular correlation spectroscopy. The existence of a commensurate antiferromagnetic state between 200 K and 500 K, and an incommensurate spin-density-wave state below 200 K is confirmed. In addition, the present results reveal dynamical behavior of the Cr magnetic moments at elevated temperature. The observed spin fluctuations may be essential to understand the transition from the incommensurate antiferromagnetic to the paramagnetic state in thin Cr films.
©2006 The American Physical Society
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