Abstract
Precision data on transient magnetic fields (TF) in ferromagnetic Gd and Fe were obtained for oxygen ions at velocities between 2 and 8v 0 (v 0=c/137) using the16O(3−) state as probe. At the high velocities the TF in Gd were found to be twice as large as in Fe which is in contrast to the generally observed scaling with the polarization density of the hosts.
Degrees of polarization could be deduced from TF strengths using measured ion fractions of singly occupiedK-shell. The values derived were compared with theoretical estimates based on spin exchange scattering as a possible polarization mechanism.
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Speidel, K.H., Hagelberg, F., Knopp, M. et al. Strong enhancement of transient magnetic fields in Gd over Fe for oxygen ions at high velocities. Z Phys D - Atoms, Molecules and Clusters 1, 363–372 (1986). https://doi.org/10.1007/BF01431178
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DOI: https://doi.org/10.1007/BF01431178