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The Contribution of Magnetic Dipolar Interactions to Nuclear Spin Relaxation by Vacancy‐Type Self‐Diffusion Mechanisms in Metals
Author(s) -
Cavelius E.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220650116
Subject(s) - vacancy defect , relaxation (psychology) , diffusion , dipole , spin (aerodynamics) , condensed matter physics , spin diffusion , self diffusion , materials science , chemical physics , chemistry , nuclear magnetic resonance , physics , thermodynamics , psychology , social psychology , self service , marketing , business , organic chemistry
The spectral densities determining the dipolar contribution to the nuclear spin relaxation times are calculated for a combined monovacancy–divacancy mechanism of self‐diffusion in solids. The treatment is based on Wolf's encounter model for monovacancies and isotopically pure crystals. Numerical results are given for isotopically pure f.c.c. and b.c.c. crystals. The extension to more than one spin species is indicated.