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Study of Internal Motion in Materials by Means of Direct Observation of Relaxation Resonances in NMR (NMRRR)

Published online by Cambridge University Press:  15 February 2011

L. Van Gerven ,
P. Coppens  and
P. Van Hecke
L. Van Gerven
Affiliation:
Laboratorium voor Vaste Stof - Fysika en Magnetisme, Katholieke Universiteit Leuven, 3030 Leuven (Belgium)
P. Coppens
Affiliation:
Laboratorium voor Vaste Stof - Fysika en Magnetisme, Katholieke Universiteit Leuven, 3030 Leuven (Belgium)
P. Van Hecke
Affiliation:
Laboratorium voor Vaste Stof - Fysika en Magnetisme, Katholieke Universiteit Leuven, 3030 Leuven (Belgium)
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Abstract

A method, different from the classical ones, for studying internal motions - in particular reorientational and tunneling modulation of rotations - via NMR is described. Instead of looking for matching or resonance maxima in NMR T1−1 vs. T - curves [ where o (↗)≅ωo,with ρ the correlation rate and ωo: the Larmor frequency] we look for such maxima in NMR T1−1 vs. ωo - curves [where ω =↗o, with ω: the (tunneling)frequency]. These method, Nuclear Magnetic Resonance Relaxation Resonance (NMRRR), has marked advantages, which are discussed. A field cycling technique is presented. Typical results, for solid silane, are given.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 3: Symposium – Nuclear and Electron Resonance Spectroscopies Applied to Materials Science , 1980 , 521
Copyright
Copyright © Materials Research Society 1981

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References

REFERENCES

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