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Observation of superspin glass state in magnetically textured ferrofluid
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10.1063/1.3072383
/content/aip/journal/jap/105/7/10.1063/1.3072383
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/7/10.1063/1.3072383
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

dc magnetization vs temperature of maghemite ferrofluid under a probing field of 1 Oe. (a) Comparison between measured after the sample had been aligned at 15 and at 30 kOe. (b) of textured and nontextured ferrofluid. Note that both measurements were taken on the same ferrofluid sample, one (nontextured) prior and the other (textured) after the sample was exposed to a strong field to align the anisotropy axes of nanoparticles.

Image of FIG. 2.
FIG. 2.

ac susceptibility of textured ferrofluid vs temperature at various excitation frequencies (in CGS). (a) In phase (real component) and (b) out-of-phase (imaginary component) of ac susceptibility. In both components, the peak position shifts toward higher temperatures with increasing frequency . Evolution of the frequency dependent peak temperature in the real-part of ac susceptibility, , fit to (c) Arrhenius law and (d) critical law.

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/content/aip/journal/jap/105/7/10.1063/1.3072383
2009-03-11
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Observation of superspin glass state in magnetically textured ferrofluid (γ-Fe2O3)
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/7/10.1063/1.3072383
10.1063/1.3072383
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