Abstract
It is shown by electron-energy-loss spectroscopy with spin analysis that electrons inelastically scattered from a ferromagnet (${\mathrm{Fe}}_{82}$${\mathrm{B}}_{12}$${\mathrm{Si}}_{6}$) can have a high spin polarization as a result of exchange scattering. A maximum of the spin polarization occurs around 2.2-eV energy loss corresponding to the ferromagnetic exchange splitting. This experiment offers new possibilities for studying spin-flip Stoner excitations in ferromagnets.
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