Analysis of the spin polarization of secondary electrons emitted from permalloy polycrystals

The spin polarization of secondary electrons scattered from a permalloy mat erial is calculated using a Monte Carlo simulation of electron scattering b ased on the single scattering model. The simulation model takes into accoun t not only the conduction-band polarization but also the inelastic mean fre e path depending on the electron spin. The calculated primary energy and in cident angle dependences of the polarization of the secondary electrons sho w reasonable agreement with the experimental results.