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Interspacing dependence of spin-dependent variable range hopping for cold-pressed Fe3O4 nanoparticles
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10.1063/1.4804335
/content/aip/journal/jap/113/18/10.1063/1.4804335
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/18/10.1063/1.4804335
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Figures

Image of FIG. 1.
FIG. 1.

(a) TEM image of FeO NPs synthesized by high temperature solution phase reaction; the inset shows high-resolution TEM image of FeO NPs; (b) the particle size distribution histogram of FeO NPs.

Image of FIG. 2.
FIG. 2.

The MR measured at 110 K for a series of FeO NPs samples cold-pressed under 20.0 MPa (▼), 1.0 GPa (▲), 3.0 GPa (●), and 5.0 GPa (▪).

Image of FIG. 3.
FIG. 3.

The temperature-dependent resistivity for five samples pressed under 20.0 MPa, 1.0 GPa, 1.5 GPa, 3.0 GPa, and 5.0 GPa; the inset is the enlarged part from 70 to 120 K.

Image of FIG. 4.
FIG. 4.

Logarithmic resistivity as a function of T − ¼ (●) and T − ½ (◻) for typical samples cold-pressed under 20.0 MPa, 1.0 GPa, 1.5GP, 3.0 GPa, and 5.0 GPa, respectively.

Image of FIG. 5.
FIG. 5.

Experimental temperature-dependent resistivity for samples pressed under (a) 20 MPa (Δ), (b) 1 GPa (○), and (c) 5 GPa (◻); calculated RRN temperature-dependent resistivity with the distance between nanoparticles (a) 2 nm, (b) 1 nm, and (c) 0 nm. (d) The calculated schematic drawing for the RRN system.

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/content/aip/journal/jap/113/18/10.1063/1.4804335
2013-05-10
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interspacing dependence of spin-dependent variable range hopping for cold-pressed Fe3O4 nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/18/10.1063/1.4804335
10.1063/1.4804335
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