Abstract
The dependences of the intensities of two-pulse and single-pulse echoes on the time of the application of the pulses of magnetostatic field (video pulses) and on the frequency of driving pulses have been investigated experimentally. The measurements were conducted on polycrystals of metallic cobalt, half-metallic Co2 MnSi and NiMnSb, and lithium ferrite. It is shown that in lithium ferrite the single-pulse echo is formed by the stimulated mechanism of excitation, whereas in the other substances that were investigated, via the distortion of the fronts of the driving pulse. The prospects of the use of video pulses for quality control of magnetic materials is substantiated.
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Original Russian Text © A.M. Akhalkatsi, T.O. Gegechkori, G.I. Mamniashvili, Z.G. Shermadini, A.N. Pogorelyi, O.M. Kuz’mak, 2008, published in Fizika Metallov i Metall ovedenie, 2008, Vol. 105, No. 4, pp. 379–3.84.
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Akhalkatsi, A.M., Gegechkori, T.O., Mamniashvili, G.I. et al. Magnetic video-pulse action on the nuclear spin echo in multidomain magnetic materials. Phys. Metals Metallogr. 105, 351–355 (2008). https://doi.org/10.1134/S0031918X08040066
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DOI: https://doi.org/10.1134/S0031918X08040066