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Ageing dynamics of ...
Ageing dynamics of a superspin glass
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- Andersson, Mikael Svante (author)
- Uppsala universitet,Fasta tillståndets fysik
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De Toro, Jose Angel (author)
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Lee, Su Seong (author)
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- Mathieu, Roland (author)
- Uppsala universitet,Fasta tillståndets fysik
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- Nordblad, Per (author)
- Uppsala universitet,Fasta tillståndets fysik
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(creator_code:org_t)
- 2014-09-26
- 2014
- English.
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In: Europhysics letters. - : IOP Publishing. - 0295-5075 .- 1286-4854. ; 108:1, s. 17004-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Magnetization dynamics of a model superspin glass system consisting of nearly monodispersed close-packed maghemite particles of diameter 8 nm is investigated. The observed non-equilibrium features of the dynamics are qualitatively similar to those of atomic spin glass systems. The intrinsic relaxation function, as observed in zero-field-cooled magnetization relaxation experiments, depends on the time the sample has been kept at constant temperature (ageing). Accompanying low-field experiments show that the archetypal spin glass characteristics -ageing, memory and rejuvenation- are reproduced in this dense system of dipolar-dipolar interacting superspins.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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