Russek, S.
, Rogers, C.
, Kirschenbaum, L.
, Beale, P.
and Sanders, S.
(1997),
Observation of a fluctuation-enhanced magnetoresistance in Ni81Fe19 /Ag multilayers at high current density, Physical Review B, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905314
(Accessed November 21, 2024)
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Observation of a fluctuation-enhanced magnetoresistance in Ni81Fe19 /Ag multilayers at high current density
Published
Author(s)
, C. T. Rogers, L S. Kirschenbaum, P D. Beale, Steven C. Sanders
Abstract
We report a correlation between peaks observed in the resistance versus applied magnetic field and low frequency resistance noise for Ni81Fe19/Ag giant magnetoresistance systems with dc bias current density above 10^6 A/cm^2. The magnetic noise has a 1/f -like spectrum and arises from time-dependent magnetic orientational fluctuations within the multilayer. The noise amplitude is strongly correlated with the observed magnetoresistance peaks. The data and a simple model for the fluctuations demonstrate the important role of fluctuations in determining magnetoresistance in such multilayer systems.Citation
Physical Review B
Volume
56
Issue
14
Pub Type
Journals
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Citation
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Created October 1, 1997, Updated February 19, 2017