Title: Low-frequency response in the magnetic susceptibility of antiferromagnetically coupled Fe/Cr multilayers
Authors: Aliev, FG
Martinez, JL
Moshchalkov, Victor
Bruynseraede, Yvan
Levanyuk, AP
Villar, R #
Issue Date: Feb-2002
Publisher: Elsevier science bv
Series Title: Journal of magnetism and magnetic materials vol:240 issue:1-3 pages:501-503
Abstract: The magnetic field and temperature dependence of the low-frequency (f < 10(4) Hz) in- and out-of-phase magnetic response of antiferromagnetically coupled Fe/Cr(1 0 0) shows that at T > 100 K both the real (chi') and imaginary (chi") parts of the susceptibility exhibit hysteretic dependence on the magnetic field with maxima of chi"(H) at H approximate to +/-25 Oe. At T = 2 K the losses exhibit an unusual strong frequency dependence describable within a single relaxation time scheme. The corresponding relaxation time proves to be strongly field-dependent which could be related to some quantum tunneling processes at low temperatures. (C) 2002 Elsevier Science B.V. All rights reserved.
ISSN: 0304-8853
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physics and Astronomy - miscellaneous
# (joint) last author

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