8Li+ β-NMR in the cubic insulator MgO
Loading...
Date
2014-12-16
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Abstract
We present extensive high magnetic field β-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 linewidth 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. Open Access CC-BY
Description
Keywords
Magnetic fields, Crystals, Crystal lattices, Relaxation Time, Temperature dependence, Ions, Crystal doping
Citation
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+ β-NMR in the cubic insulator MgO. Paper presented to the 13th International Conference on Muon Spin Rotation, Relaxation and Resonance 1–6 June 2014, Grindelwald, Switzerland. In Journal of Physics: Conference Series, 551(1), 012033. doi:10.1088/1742-6596/551/1/012033