Cd and In-doping in thin film SnO2
In this paper, we investigate the effects of doping in the local structure of SnO2 by measuring the hyperfine interactions at impurity nuclei using the Time Differential Perturbed Gamma-Gamma Angular Correlation (TDPAC) method in addition to density functional theory simulations. The hyperfine field...
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Veröffentlicht in: | Journal of applied physics 2017-05, Vol.121 (19) |
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Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | In this paper, we investigate the effects of doping in the local structure of SnO2 by
measuring the
hyperfine
interactions at
impurity nuclei using the Time Differential Perturbed Gamma-Gamma Angular Correlation
(TDPAC) method in addition to density functional theory simulations. The hyperfine field
parameters have been probed as a function of the temperature in thin film samples. The
experimental results reveal that 117Cd/In and 111In/Cd are
incorporated and stabilized in the SnO2 lattice replacing the cationic site.
Significant differences in the electric field gradient were observed from TDPAC measurements with both the
probe nuclei. Furthermore, the absence of strongly damped spectra further indicates that
implanted Cd atoms (for 117Cd/In probe nuclei measurements) easily occupy
regular substitutional Sn sites with good stability. The simulated value for the
electric field
gradient obtained with the first oxygen neighbor removed is closer to the experimental
value observed for 117Cd, which also indicates this configuration as stable and
present in the sample. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.4983669 |