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On the 55Mn NMR Echo Enhancement in Half-Metallic Heusler Compound NiMnSb in Applied Magnetic Fields

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Abstract

The effect of NMR spin-echo enhancement of 55Mn nuclei arranged in domain walls of half-metallic Heusler compounds NiMnSb and NiMnSi in the applied direct-current (dc) magnetic field was observed and studied. The effect could be associated with the increase of spin-spin relaxation time at application of the outer dc magnetic field related to the rearrangement and disappearance of the domain wall structure in the half-metallic material.

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Acknowledgments

The work is supported by ISTC grant A-2123.

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Authors and Affiliations

  1. Andronikashvili Institute of Physics, Ivane Javakhishvili Tbilisi State University, 6 Tamarashvili St., 0177, Tbilisi, Georgia

    G. Mamniashvili & T. Gegechkori

  2. Ivane Javakhishvili Tbilisi State University, 1, Chavchavadze Ave., 0179, Tbilisi, Georgia

    T. Gavasheli

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  1. G. Mamniashvili
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  2. T. Gegechkori
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  3. T. Gavasheli
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Correspondence to G. Mamniashvili.

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Mamniashvili, G., Gegechkori, T. & Gavasheli, T. On the 55Mn NMR Echo Enhancement in Half-Metallic Heusler Compound NiMnSb in Applied Magnetic Fields. J Supercond Nov Magn 30, 2981–2984 (2017). https://doi.org/10.1007/s10948-016-3651-7

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  • DOI: https://doi.org/10.1007/s10948-016-3651-7

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