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Memory in nanomagnetic systems: Superparamagnetism versus Spinglass behavior | | Malay Bandyopadhyay
; Sushanta Dattagupta
; | | Date: |
9 Jun 2006 | | Subject: | Statistical Mechanics | | Abstract: | The slow dynamics and concomitant memory (aging) effects seen in nanomagnetic systems are analyzed on the basis of two separate paradigms : superparamagnets and spinglasses. It is argued that in a large class of aging phenomena it suffices to invoke superparamagnetic relaxation of individual single domain particles but with a distribution of their sizes. Cases in which interactions and randomness are important in view of distinctive experimental signatures, are also discussed. | | Source: | arXiv, cond-mat/0606233 | | Services: | Forum | Review | PDF | Favorites | |
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