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Interaction effects and transport properties of Pt capped Co nanoparticles
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10.1063/1.4789422
/content/aip/journal/jap/113/4/10.1063/1.4789422
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/4/10.1063/1.4789422
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

STEM images of uncapped Co NPs (a) and Pt capped systems with tPt  = 0.53 nm (b) and 1.40 nm (c).

Image of FIG. 2.
FIG. 2.

Magnetization measurements of uncapped NPs: ZFC/FC measurements at H = 20 Oe (a), hysteresis loop at 5 K (b), test for the presence of a memory effect (c), and δM curve at 5 K (d).

Image of FIG. 3.
FIG. 3.

Magnetization data for the capped system with tPt  = 0.18 nm: ZFC/FC measurements at H = 20 Oe (a), hysteresis loop at T = 5 K (b), and δM curve at T = 5 K (c).

Image of FIG. 4.
FIG. 4.

Magnetization measurements fortPt  = 0.53 nm: ZFC/FC measurements at H = 20 Oe (a), hysteresis loop at T = 5 K(b), and δM curve at T = 5 K (c).

Image of FIG. 5.
FIG. 5.

Magnetization measurements for tPt  = 0.70 nm: ZFC/FC curves at H = 20 Oe with a field of H = +1 kOe (a) and H = −1 kOe (c) applied before the initial cooling, hysteresis loop at T = 5 K (b), and δM curve at T = 5 K (d).

Image of FIG. 6.
FIG. 6.

Magnetization measurements for tPt  = 0.88 nm: ZFC/FC curves at H = 20 Oe with a field of +1 kOe (a) and −1 kOe (c) applied before the initial cooling, hysteresis loop at 5 K (b), and δM curve at 5 K (d).

Image of FIG. 7.
FIG. 7.

Magnetization measurements for tPt  = 1.05 nm: ZFC/FC curves at H = 20 Oe with a field of −1 kOe applied before the initial cooling (a), hysteresis loop at 5 K (b), and δM curve at 5 K (c).

Image of FIG. 8.
FIG. 8.

Magnetization measurements fortPt  = 1.75 nm: ZFC/FC curves at H = 20 Oe with a field of +1 kOe (a) and −1 kOe (b) applied before the initial cooling, hysteresis loop at 5 K (c).

Image of FIG. 9.
FIG. 9.

Relative magnetoresistance curves as function of applied field withcurrent direction parallel to field ((a), (c), (e)) and transversal to field ((b), (d), (f)) for tPt  = 1.40 nm ((a), (b)), 0.88 nm ((c), (d)), and 0.70 nm ((e),(f)) measured at T = 4.2 K and T = 5 K, respectively. The sheet resistance varies from 0.9 kΩ over 0.6 kΩ to 0.1 kΩ for increasing Pt coverage.

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/content/aip/journal/jap/113/4/10.1063/1.4789422
2013-01-28
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interaction effects and transport properties of Pt capped Co nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/4/10.1063/1.4789422
10.1063/1.4789422
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