Characterizing interactions in fine magnetic particle systems
using first order reversal curves
Characterizing interactions in fine magnetic particle systems
using first order reversal curves
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.
6660-6667
Pike, Christopher R.
766800a0-41cf-463b-9fc1-c3ebc4bec76e
Roberts, Andrew P.
4f062491-5408-4edb-8dd1-140c6a42e93f
Verosub, Kenneth L.
396d0f22-35c1-42b9-8581-96fbb6df597d
1 May 1999
Pike, Christopher R.
766800a0-41cf-463b-9fc1-c3ebc4bec76e
Roberts, Andrew P.
4f062491-5408-4edb-8dd1-140c6a42e93f
Verosub, Kenneth L.
396d0f22-35c1-42b9-8581-96fbb6df597d
Pike, Christopher R., Roberts, Andrew P. and Verosub, Kenneth L.
(1999)
Characterizing interactions in fine magnetic particle systems
using first order reversal curves.
Journal of Applied Physics, 85 (9), .
Abstract
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.
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Published date: 1 May 1999
Additional Information:
Deposited by J. Conquer
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Local EPrints ID: 66105
URI: http://eprints.soton.ac.uk/id/eprint/66105
ISSN: 0021-8979
PURE UUID: 439c480d-0a10-4fe3-8325-0f088cce38e0
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Date deposited: 29 Apr 2009
Last modified: 27 Apr 2022 08:31
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Contributors
Author:
Christopher R. Pike
Author:
Andrew P. Roberts
Author:
Kenneth L. Verosub
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