Nuclear spin relaxation by translational diffusion in solids. VI. Monovacancy limit
- 10 April 1981
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 14 (10) , 1479-1490
- https://doi.org/10.1088/0022-3719/14/10/015
Abstract
For pt.V see ibid., vol.14, p.447 (1981). The theory of the two-spin correlation functions J(p)( omega ) that determine nuclear spin relaxation rates has been developed for the monovacancy limit of high spin concentrations using the encounter model of Einenstadt and Redfield. The theory is based upon a rate equation for the spin pair probability function and avoids the assumption of a Poisson distribution used by Wolf which is only valid if the spin motions are uncorrelated. In the high-frequency limit omega tau s>>1 and omega tau v<>1 the results obtained disagree with those obtained by Feeders (1979) using a moment expansion.Keywords
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