Publication Details

MacFarlane, W. A., Parolin, T. J., Cortie, D. L., Chow, K. H., Hossain, M. D., Kiefl, R. F., Levy, C. D. P., McFadden, R. M. L., Morris, G. D., Pearson, M. R., Saadaoui, H., Salman, Z., Song, Q. & Wang, D. (2014). 8Li+ B-NMR in the cubic insulator MgO. Journal of Physics: Conference Series, 551 (1), 012033-1-012033-7.


We present extensive high magnetic field B-NMR measurements of 8Li+ implanted in single crystals of MgO. The narrow resonance, consistent with a cubic 8Li+ site, likely the tetrahedral interstitital, is used routinely as a reference for shift measurements. We show the intrinsic line width is on the order of 200 Hz, allowing a frequency determination to an accuracy of a few Hz. We find no implantation energy dependence of the resonance within a few ppm, but there is evidence of slow spin dynamics in hole-burning measurements. The spin lattice relaxation is slow. The temperature dependence reveals interesting changes at low temperature whose origin remains uncertain.



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