Accession Number:

AD0271559

Title:

RELAXATION PHENOMENA IN DILUTE POTASSIUM FERRICYANIDE. PART II. A THEORETICAL AND EXPERIMENTAL INVESTIGATION OF RELAXATION EFFECTS IN K3(FE, CO)(CN)6

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV BALTIMORE MD CARLYLE BARTON LAB

Personal Author(s):

Report Date:

1962-01-01

Pagination or Media Count:

1.0

Abstract:

The measured spin-lattice relaxation times in K3Co, FeCN6 are in agreement with the values calculated on the basis of the Van Vleck theory. Comparison of the results with similar measurements Paxman, D. H. Proc. Phys. Soc. 78180, 1961 at higher ferricyanide concentrations indicated a small concentration dependence at temperatures below 2.5 K. It was concluded that the Raman processes dominate the spinlattice relaxation mechanism to lower temperatures in the more dilute crystals. The initial rapid decay of the saturated spin system observed in the relaxation curves was interpreted as a spin-diffusion process rather than crossrelaxation between adjacent resonance lines, since the effect was independent of the separation of these resonance lines. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE