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Study of ferromagnetic bulk domains by neutron depolarization in three dimensions

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Zeitschrift für Physik

Abstract

The polarization change of a polarized neutron beam after transmission through a partly magnetized ferromagnetic material can be described by a (3×3) depolarization matrix. A theory has been developed to interpret this matrix in terms of well-known magnetic domain quantities such as the reduced mean magnetizationm, the mean domain size δ and the mean square direction cosines γ x , γ y and γ z of the inner magnetization within the domains. In order to do this it was necessary to make some simplifying assumptions about ferromagnetic domain structures. The influences of these assumptions on the quantities derived have been discussed. Finally the theory has been applied to depolarization measurements in nickel foils with the magnetic field and mechanical stress as parameters.

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Authors and Affiliations

  1. Interuniversitair Reactor Instituut, Delft, The Netherlands

    M. Th. Rekveldt

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  1. M. Th. Rekveldt
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Additional information

The author would like to thank Prof. Dr. J. J. van Loef for suggesting to study the subject of neutron depolarization and for helpful comments.

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Rekveldt, M.T. Study of ferromagnetic bulk domains by neutron depolarization in three dimensions. Z. Physik 259, 391–410 (1973). https://doi.org/10.1007/BF01397376

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  • DOI: https://doi.org/10.1007/BF01397376

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