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Magnetic resonance studies of ions in nanoparticles of processed at different temperatures
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Image of FIG. 1.
FIG. 1.

X-band EPR spectra for Co doped samples with different Co-dopings, recorded at . The additional peak observed only in the 8% Co-doped sample is ignored in the analysis assuming it to be due to an unknown impurity.

Image of FIG. 2.
FIG. 2.

X-band EPR spectra of 1.0% Co-doped samples fabricated at different temperatures recorded at .

Image of FIG. 3.
FIG. 3.

The insets show simulated spectra for (a) simulated first-derivative FMR resonances (FMR1), (b) simulated first-derivative broad resonances (FMR2) (c) that due to a ion in an interstitial position, and (d) that due to a ion in a substitutional site. The main figure shows a weighted overlap of the four individual components shown in insets (a) through (d) to correspond to the experimental spectrum for the sample fabricated at as shown in Fig. 2. The other observed spectra can be simulated by appropriate weightings of the four constituent spectra and linewidths.


Generic image for table
Table I.

The - and -tensor values and the linewidths of the interstitial and substitutional Co ions employed in the simulation of the EPR spectra.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetic resonance studies of Co2+ ions in nanoparticles of SnO2 processed at different temperatures