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Fabrication and enhanced magnetoresistance of -coated nanosphere compact
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10.1063/1.2741612
/content/aip/journal/apl/90/21/10.1063/1.2741612
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/21/10.1063/1.2741612
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

SEM image of the nanoparticles.

Image of FIG. 2.
FIG. 2.

(Color online) (a) TEM image of -coated magnetite. (b) A partly enlarged image of (a). The insets show the EDS patterns taken on the magnetite nanoparticles.

Image of FIG. 3.
FIG. 3.

Resistivtiy as a function of temperature in plot. is plotted in a logarithmic scale. -coated magnetite were sintered at (∎), (●), and (▴). The solid line denotes the pure magnetite compact sintered at .

Image of FIG. 4.
FIG. 4.

MR as a function of applied magnetic field. Solid circle denotes the MR of -coated magnetite at 300, 200, and from top to bottom; solid line denotes the MR of uncoated magnetite at 300, 200, and from top to bottom.

Image of FIG. 5.
FIG. 5.

Temperature dependence of MR at and the corresponding deduced spin polarization. The top inset shows the thickness dependence of low-field MR at . The bottom inset shows the sintering temperature dependence of low-field MR at .

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/content/aip/journal/apl/90/21/10.1063/1.2741612
2007-05-23
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Fabrication and enhanced magnetoresistance of SiO2-coated Fe3O4 nanosphere compact
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/21/10.1063/1.2741612
10.1063/1.2741612
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