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Observation of magnetism, low resistivity, and magnetoresistance in the near-surface region of Gd implanted ZnO
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10.1063/1.4747525
/content/aip/journal/apl/101/8/10.1063/1.4747525
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/8/10.1063/1.4747525
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Magnetization for unimplanted and Gd implanted ZnO single crystals at an applied field of 100 Oe after annealing at 650 °C. Inset: saturation magnetization at high magnetic fields for unimplanted and Gd implanted and annealed ZnO obtained from M(H) measurements at 5 K (filled circles) and 300 K (open circles). Also shown are similar data after Ar implantation at 5 K (filled triangles) and 300 K (open triangles).

Image of FIG. 2.
FIG. 2.

Temperature dependent resistivity for Gd implanted and annealed ZnO.

Image of FIG. 3.
FIG. 3.

Magnetoresistance at 10 K for Gd implanted and annealed ZnO (solid curves). Also shown is a fit to the 0.7% Gd implanted ZnO crystal assuming spin-tunnelling between ferromagnetic defect clusters (dashed curve). Inset: Plot of the magnetoresistance at 200 K against the square of the applied magnetic field (plus symbols). The line is a linear fit to the data.

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/content/aip/journal/apl/101/8/10.1063/1.4747525
2012-08-22
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Observation of magnetism, low resistivity, and magnetoresistance in the near-surface region of Gd implanted ZnO
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/8/10.1063/1.4747525
10.1063/1.4747525
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