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Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1684

Title: Experimental comparison of exchange bias measurement methodologies
Authors: Hovorka, Ondrej
Berger, Andreas
Friedman, Gary
Issue Date: May-2007
Publisher: American Institute of Physics
Citation: Journal of Applied Physics, 101: pp. 09E515-1 - 09E515-3.
Abstract: Measurements performed on all-ferromagnetic bilayer systems and supported by model calculation results are used to compare different exchange bias characterization methods. We demonstrate that the accuracy of the conventional two-point technique based on measuring the sum of the coercive fields depends on the symmetry properties of hysteresis loops. On the other hand, the recently proposed center of mass method yields results independent of the hysteresis loop type and coincides with the two-point measurement only if the loops are symmetric. Our experimental and simulation results clearly demonstrate a strong correlation between loop asymmetry and the difference between these methods.
URI: http://dx.doi.org/10.1063/1.2711713
Appears in Collections:Faculty Research and Publications (ECE)

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