Quenching of self-diffusion by impurities in plastic crystals as a tentative explanation of experimental discrepancies

Volino, F.

doi:10.1080/00268977400100731

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…linewidth of other impure plastic crystals [21], although some other explanation has been proposed for this fact [22]. However, as in reference [10], the basic assumption in the analysis of reference [11 ] was that the racticals were uniformly distributed in the sample, so that a sphere per radical could be defined, whose radius R was given by (4rrne) -3.…”

Section: Analysis Of Nuclear Slr and Dnp Data Near The Melting-pointmentioning

confidence: 99%

Evidence concerning the formation of a heterogeneous solid solution in the plastic phase of cyclohexane doped with a nitroxide free radical from magnetic resonance studies

Verdún

Volino

1978

Molecular Physics

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Existing published E.P.R., nuclear spin lattice relaxation, dynamic nuclear polarization and electron-electron double-resonance data on the plastic phase of cyclohexane doped with a nitroxide free radical are re-examined and analysed in a consistent way. It is shown that (i) the local concentration of free radicals is higher than foreseen, assuming a uniform distribution and (ii) the molecular motions near the radical are slower than in the pure system. These results suggest that this system should be pictured as a heterogeneous solid solution where the local properties around the radicals are significantly different from those far from the radicals.

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Section: Analysis Of Nuclear Slr and Dnp Data Near The Melting-pointmentioning

confidence: 99%

Evidence concerning the formation of a heterogeneous solid solution in the plastic phase of cyclohexane doped with a nitroxide free radical from magnetic resonance studies

Verdún

Volino

1978

Molecular Physics

Self Cite

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show abstract

“…Some line-width data for plastic crystals have been reported [3,4] which have a similar form to our results for samples containing vapour snakes. In that work [4] it was assumed that the effects were due to the influence of impurities on self-diffusion and a theoretical analysis of the data was made on the basis of this assumption [5].…”

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confidence: 99%