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Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles
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10.1063/1.2773694
/content/aip/journal/jap/102/4/10.1063/1.2773694
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/4/10.1063/1.2773694
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

TEM analysis of the 3 nm FePt nanoparticle before and after salt-matrix annealing: (a) and (b) HRTEM images of the particles before and after salt-matrix annealing, respectively; (c) STEM HDAAF image of the annealed particles; (d) and (e) SAED patterns of the particle before and after annealing, respectively.

Image of FIG. 2.
FIG. 2.

(Color online) XRD patterns of the FePt nanoparticles before and after salt-matrix annealing. The pattern of the annealed film, which is made from the 3 nm nanoparticles, is also included for comparison.

Image of FIG. 3.
FIG. 3.

(Color online) ZFC and FC curves of as-synthesized nanoparticles. The inset gives the ZFC curve of salt-annealed particles.

Image of FIG. 4.
FIG. 4.

(Color online) Hysteresis loops of the salt-annealed at different temperature. The inset shows the hysteresis loops of the fcc nanoparticle before annealing.

Image of FIG. 5.
FIG. 5.

(Color online) Temperature dependence of switching field and of the annealed 3 nm nanoparticles and the coercivity of the as-synthesized particles. The dashed line is the Kneller-Sharrock fitting of the data.

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/content/aip/journal/jap/102/4/10.1063/1.2773694
2007-08-30
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/4/10.1063/1.2773694
10.1063/1.2773694
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