Magnetic measurements, ferromagnetic resonance, magneto-optical Ken ro
tation and nuclear magnetic resonance have been used to study the spin
polarization of nonmagnetic layers of Pd, Cu, Ag and Al in multilayer
s and sandwiches containing Fe, Co, FeCo and CoCr. The existence of th
e spin polarization of Pd, Cu, Ag and Al was demonstrated directly or
indirectly.