Abstract
Results from bulk domain structure determination by analysing the wavelength dependent depolarization of a polychromatic beam of polarized neutrons transmitted through soft magnetic ribbons are presented and discussed. Information on mean magnetization, static magnetization fluctuations, and magnetic anisotropy was obtained for amorphous ferromagnetic ribbons of composition Fe78Co8.1B13.9 and Fe56.2Co7Ni15.6Si4B17.2 taken as examples. Under favourable circumstances even simple models of the domain structure are found satisfactory as in the case of carefully demagnetized samples. However, more complex modes are shown to be reasonable in describing the change in bulk magnetization state probed by the neutrons.
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