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Evidence of hydrogen-mediated ferromagnetic coupling in Mn-doped ZnO
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10.1063/1.3561775
/content/aip/journal/apl/98/10/10.1063/1.3561775
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/10/10.1063/1.3561775

Figures

Image of FIG. 1.
FIG. 1.

Mass-normalized EPR spectra at room temperature for as-grown (a) and postannealed (b) undoped ZnO and 8 at. % ZnO:Mn. Insets of (a) and (b) show expansion of the sharp line. EPR intensities of the sharp line as a function of temperature for the as-grown (c) and the postannealed (d) ZnO, and ZnO:Mn are also shown. The solid lines are fits by Eq. (1).

Image of FIG. 2.
FIG. 2.

Temperature dependence of the (inverse) broad EPR line intensity for the as-grown and postannealed ZnO:Mn. The straight lines are the fits by Curie–Weiss law. Inset: EPR spectra for postannealed ZnO:Mn with a fit to a Lorentzian form.

Image of FIG. 3.
FIG. 3.

EPR signals from 5 and 8 at. % ZnO:Mn samples synthesized with 4 g of PVP, and a ZnO:Mn (8 at. %) synthesized with 1 g of PVP.

Image of FIG. 4.
FIG. 4.

Mass-normalized NMR spectra of ZnO and ZnO:Mn measured at 300 K. Inset: -axis magnification of the spectra.

Tables

Generic image for table
Table I.

Parameters obtained by fitting according to Eq. (1).

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/content/aip/journal/apl/98/10/10.1063/1.3561775
2011-03-07
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Evidence of hydrogen-mediated ferromagnetic coupling in Mn-doped ZnO
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/10/10.1063/1.3561775
10.1063/1.3561775
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