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Gruskova A. Lipka J. Papanova M. Kevicka D. Gonzalez A. Mendoza G. Toth I. Slama J. 《Hyperfine Interactions》2004,159(1-4):187-191
The β-NMR of short-lived β-emitter in a rutile TiO2 single crystal has been measured as functions of temperature and external magnetic field. Atomic motion induced spin lattice
relaxation was observed for two known sites, O substitutional and interstitial sites. The data were analyzed in terms of the
thermal atomic jump, which suggests that the motion of defects around the substitutional 12N atom for O, and of the interstitial 12N atom are attributed to the spin lattice relaxation. The electric field gradients have shown temperature dependence for both
sites, which is probably due to the thermal expansion of rutile. 相似文献
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