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Observation of chiral ordering of moments in the magnetic mesostucture of the (Pd0.984Fe0.016)0.95Mn0.05 alloy by means of polarized neutrons

  • Magnetism and Strongly Correlated Electronic Systems
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Abstract

Investigation of the magnetic structure of the diluted (Pd0.984Fe0.016)0.95Mn0.05 alloy at meso-and nanoscale levels by means of two techniques of small-angle polarized-neutron scattering (within a direct beam and beyond it) has been performed in the temperature range 10<T<60 K. The dependences of the neutron beam depolarization, the polarization rotation angle, and the polarization-dependent magnetic scattering cross section on a weak (0<H<40 A/cm) external magnetic field have been studied. A simple model of neutron beam depolarization by a sample with uniaxial magnetic anisotropy was used to analyze the results obtained. The experiment on polarized-neutron scattering in the so-called direct geometry showed the existence of a polarization-dependent scattering cross section. This scattering has left-right asymmetry and depends on temperature. Comparison of these results with the depolarization data leads to a conclusion about the existence of static chiral fluctuations in large-scale inhomogeneities.

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Original Russian Text © L.A. Aksel’rod, G.P. Gordeev, V.N. Zabenkin, I.M. Lazebnik, V. Wagner, H. Eckerlebe, 2007, published in Kristallografiya, 2007, Vol. 52, No. 3, pp. 425–428.

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Aksel’rod, L.A., Gordeev, G.P., Zabenkin, V.N. et al. Observation of chiral ordering of moments in the magnetic mesostucture of the (Pd0.984Fe0.016)0.95Mn0.05 alloy by means of polarized neutrons. Crystallogr. Rep. 52, 403–406 (2007). https://doi.org/10.1134/S1063774507030091

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  • DOI: https://doi.org/10.1134/S1063774507030091

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