15:15 〜 15:30
▲ [11p-M101-8] Influence of conductivity on magnetostatic surface spin waves
キーワード：spin wave, simulation, conductivity
Conductivity of metals could affect the spin wave propagation properties. In our previous paper, thicker wave guide of Py showed high group velocity, but the decay length did not increase very much. We performed a micromagnetic simulation incorporating conductivity in order to investigate whether the conductivity affects the decay length.
The group velocity from wave form are overestimated and it is remarkable for the results incorporating conductivity. The overestimation originates from a dispersive propagation due to many k vectors containing in the excited spin waves. Additionally, damping due to conductivity plays an important role for the overestimation. With conductivity, the decay length increases initially for thin Py thickness but tends to decreases with thickness. Conductivity enhances damping of the spin wave and so the decay length does not increase .
The group velocity from wave form are overestimated and it is remarkable for the results incorporating conductivity. The overestimation originates from a dispersive propagation due to many k vectors containing in the excited spin waves. Additionally, damping due to conductivity plays an important role for the overestimation. With conductivity, the decay length increases initially for thin Py thickness but tends to decreases with thickness. Conductivity enhances damping of the spin wave and so the decay length does not increase .