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Characterizing interactions in fine magnetic particle systems using first order reversal curves

Pike, Christopher R.; Roberts, Andrew P.; Verosub, Kenneth L.. 1999 Characterizing interactions in fine magnetic particle systems using first order reversal curves. Journal of Applied Physics, 85 (9). 6660-6667.

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Abstract/Summary

We demonstrate a powerful and practical method of characterizing interactions in fine magnetic particle systems utilizing a class of hysteresis curves known as first order reversal curves. This method is tested on samples of highly dispersed magnetic particles, where it leads to a more detailed understanding of interactions than has previously been possible. In a quantitative comparison between this method and the dM method, which is based on the Wohlfarth relation, our method provides a more precise measure of the strength of the interactions. Our method also has the advantage that it can be used to decouple the effects of the mean interaction field from the effects of local interaction field variance.

Item Type: Publication - Article
ISSN: 0021-8979
Additional Information. Not used in RCUK Gateway to Research.: Deposited by J. Conquer
Date made live: 29 Apr 2009 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/166105

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