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Cross-relaxation of 8Li+ in copper

TitleCross-relaxation of 8Li+ in copper
Publication TypeJournal Article
Year of Publication2009
AuthorsMansour, AI, Morris, GD, Salman, Z, Chow, KH, Dunlop, T, Jung, J, Fan, I, MacFarlane, WA, Kiefl, RF, Parolin, TJ, Saadaoui, H, Wang, D, Hossain, MD, Song, Q, Smadella, M, Mosendz, O, Kardasz, B, Heinrich, B, Levy, CDP, Pearson, MR
JournalPhysica B: Condensed Matter
Pagination910 - 913
KeywordsBeta-detected \{NMR\}

The “cross-relaxation” method (also called “level-crossing resonance” or “avoided level-crossing”) is a powerful technique that can be used to provide detailed structural and site information on impurities in materials. In this paper, we report on the development of the cross-relaxation technique for Li + 8 at the β -detected nuclear magnetic resonance ( β -NMR) facility located in \{TRIUMF\} in Vancouver. The measurements were carried out on a 〈 1 1 0 〉 Cu single crystal where the relaxation rate of the Li 8 polarization was monitored as a function of the applied longitudinal magnetic field. The occurrence of cross-relaxation, at a particular magnetic field, between the Li 8 and the surrounding nuclei is evident as a resonant enhancement of the relaxation rate at the level crossing field. We discuss inferences about the site and structure of Li + 8 in Cu from this data.