Physical Review B
An analysis of 19F NMR linewidths in the randomly diluted magnetic system KMnxMg1-xF3 is presented. It is shown that good agreement with measured linewidths can be obtained if in the usual asymptotic spin-diffusion assumption for the spin autocorrelation function 〈Siα(τ)Siα(0)〉avατ-d(x)/2, d(x) is taken to be independent of x above the percolation concentration. Experimental results in the system KNixMg1-xF3 are also presented. These data exhibit striking differences with the behavior of isostructural KMnxMg1-xF3 whose origin is discussed.
Nuclear magnetic resonance
Citation: Pilot Scholars Version (Modified MLA Style)
Engelsberg, M.; O. d Aguiar, J. Albino; Bonfim, O. F. de Alcantara; and Franco, A. Jr., "Exchange narrowing of NMR line shapes in randomly diluted magnetic systems" (1985). Physics Faculty Publications and Presentations. Paper 23.