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Strong ferromagnetism in Pt-coated ZnCoO: The role of interstitial hydrogen
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10.1063/1.4705304
/content/aip/journal/apl/100/17/10.1063/1.4705304
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/17/10.1063/1.4705304
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Hydrogenation process to Pt coated ZCO on sapphire substrate. (b) Hydrogen profile using SIMS depth profile for ZCO and Pt/ZCO before and after hydrogen treatment using HIP.

Image of FIG. 2.
FIG. 2.

The M-H curves obtained from SQUID for ZCO and Pt coated ZCO before and after hydrogen treatment using HIP (a) at 10 K and (b) at room temperature.

Image of FIG. 3.
FIG. 3.

The M vs T curves under field cooling and zero field cooling of (a) as-grown, (b) after hydrogen treatment, and (c) after dehydrogenation process of Pt/ZCO:H. The M-H curves obtained from SQUID for (d) as-grown, (e) after hydrogen treatment, and (f) after dehydrogenation process at 10 K.

Image of FIG. 4.
FIG. 4.

XPS depth profile of Pt 4f of Pt/ZCO (a) before and (b) after hydrogenation by HIP treatment.

Image of FIG. 5.
FIG. 5.

Spin densities of model geometries. (a) Nearest neighbor Co dimers in the form of Co-H-Co. (b) Two Co atoms on the next nearest neighbor sites. Red and blue ballons represent majority and minority spin densities. The atoms in hexagon centers are interstitial hydrogen atoms. Arrows in (a) and (b) indicates the positions of the Co atoms.

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/content/aip/journal/apl/100/17/10.1063/1.4705304
2012-04-24
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Strong ferromagnetism in Pt-coated ZnCoO: The role of interstitial hydrogen
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/17/10.1063/1.4705304
10.1063/1.4705304
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