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|Title:||Nuclear spin relaxation due to motion on inequivalent sites: H diffusion on O and T sites in the face-centred cubic structure||Contributor(s):||Luo, Xinjun (author); Sholl, Colin (author)||Publication Date:||2003||DOI:||10.1088/0953-8984/15/6/320||Handle Link:||https://hdl.handle.net/1959.11/1646||Abstract:||Magnetization recoveries for nuclear spin relaxation of like spins due to magnetic dipolar coupling and diffusion on inequivalent sites involve a sum of exponentials. The theory is applied to diffusion on octahedral and tetrahedral interstitial sites in the face-centred cubic structure. Monte Carlo simulations have been used to generate relaxation data for parameters typical for H in metals. It is found that only a single exponential would be observable in the high- and low-temperature limits, but that two-exponential recoveries could be observable in the vicinity of the maximum in the relaxation rate as a function of temperature. The Monte Carlo relaxation data has been fitted using a Bloembergen–Pound–Purcell (BPP) model to assess the accuracy of the BPP model.||Publication Type:||Journal Article||Source of Publication:||Journal of Physics - Condensed Matter, 15(6), p. 937-944||Publisher:||IOP Publishing Ltd||Place of Publication:||Bristol, England||ISSN:||0953-8984||Field of Research (FOR):||020499 Condensed Matter Physics not elsewhere classified||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 137
|Appears in Collections:||Journal Article|
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