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Ultrasmall iron nanoparticles: Effect of size reduction on anisotropy and magnetization
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10.1063/1.2837625
/content/aip/journal/jap/103/7/10.1063/1.2837625
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/7/10.1063/1.2837625
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Low magnification TEM image of iron nanoparticles and corresponding size histogram calculated over 2500 objects.

Image of FIG. 2.
FIG. 2.

(a) SQUID measurement of ZFC and FC magnetizations and . Inset shows invert ZFC magnetization vs temperature. (b) Hysteresis curve measured at .

Image of FIG. 3.
FIG. 3.

(a) Mössbauer spectra of iron nanoparticles measured at . Black ticks correspond to experimental data. The solid line is the simulated results obtained with (b) the corresponding fitted contributions.

Image of FIG. 4.
FIG. 4.

Magnetization vs applied field for temperatures between 20 and . Open symbols correspond to the experimental results. The solid lines with the “plein” symbols are the theoretical magnetization curves calculated using modified Langevin functions with atoms, including the influence of a unixial anisotropy of and the previously estimated dependence.

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/content/aip/journal/jap/103/7/10.1063/1.2837625
2008-02-13
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrasmall iron nanoparticles: Effect of size reduction on anisotropy and magnetization
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/7/10.1063/1.2837625
10.1063/1.2837625
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