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NMR Lineshapes of Magnetic Diluted Systems in Solids
Author(s) -
Freude D.,
Schmiedel H.
Publication year - 1972
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.2220540227
Subject(s) - spins , spin (aerodynamics) , dipole , statistical physics , magnetic moment , physics , condensed matter physics , distribution (mathematics) , statistical theory , magnetic dipole , mathematics , quantum mechanics , statistics , thermodynamics , mathematical analysis
There are two well‐known methods for calculating dipolar broadened NMR lineshapes of magnetic diluted spin systems in solids, viz. the “method of moments” and the “statistical theory”. It is shown, that in the case of a two‐dimensional statistical spin distribution the above‐mentioned methods give different results, which can be explained by the arbitrary assumption of a Lorentzian lineshape within the method of moments. An extension of statistical theory by introducing a minimum distance between the spins reveals lineshapes, which converge more rapidly and thus better correspond to real situations. Finally lineshapes of magnetic diluted spin pairs are discussed.