Abstract
57Fe NMR measurements with a Néel-type single crystal are described. The behaviour of the magnetic structure was calculated as function of the internal fieldH i. A clear distinction between wall and domain signals could be made. The corresponding relative enhancement factors η r w (H i) and η r D (H i) have been calculated and are in agreement with the measurements. The relaxation in the 90° Bloch walls is pure exponential. Both ratesT 1 −1 andT 2 −1 are proportional to η 2 w (H i). The measurements make proof, that the 90° walls are folded inside the crystal.
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K.-H. König and H. Brömer, Verhandl. DPG(VI)22, I, AM-14.11 (1987)
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König, K.H., Jung, H., Schärpf, O. et al. NMR enhancement and NMR relaxation in a <110> FeSi Néel-type single crystal. Z. Physik B - Condensed Matter 76, 493–499 (1989). https://doi.org/10.1007/BF01307900
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DOI: https://doi.org/10.1007/BF01307900