Figure 3

Magneto-optical effect of Fe₁₃Co₁₀Al₂₂F₅₅ film.

(a) Change in the transmittance of the light wave length of 1500 nm of Fe₁₃Co₁₀Al₂₂F₅₅ film deposited at 600 °C. The dots denote the experiment results of ΔT/T₀. The solid lines denote the theoretical results as a function of magnetic field H, where the magnetization curve in Fig. 3b is used for m = M(H)/M₄₀₀ and M₄₀₀ is the magnetization at the maximum measured magnetic field of 400 kA/m. (b) Magnetization curve of Fe₁₃Co₁₀Al₂₂F₅₅ film. Transmittance decreases with increased magnetic field. This result indicates that transmittance is controlled by magnetization.