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Observation of a Fluctuation-Enhanced Magnetoresistance in Ni81Fe19 /Ag Multilayers at High Current Density

Published

Author(s)

Charles T. Rogers, L S. Kirschenbaum, P D. Beale, Stephen E. Russek, S. 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 106 A/cm2. 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
Rapid Communications in Mass Spectrometry

Citation

Rogers, C. , Kirschenbaum, L. , Beale, P. , Russek, S. and Sanders, S. (1997), Observation of a Fluctuation-Enhanced Magnetoresistance in Ni81Fe19 /Ag Multilayers at High Current Density, Rapid Communications in Mass Spectrometry, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905265 (Accessed June 16, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created September 30, 1997, Updated October 12, 2021