Effect of 3d, 4d, and 5d transition metal doping on damping in permalloy thin films
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The effect of doping on the magnetic damping parameter of Ni80 Fe20 is measured for 21 transition metal dopants: Ti, V, Cr, Mn, Co, Cu, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Hf, Ta, W, Re, Os, Ir, Pt, and Au. For most of the dopants, the damping parameter increases linearly with dopant concentration. The strongest effects are observed for the 5d transition metal dopants, with a maximum of 7.7 10-3 per atomic percent osmium.