Figure 5: Measurements using Au film.

(a) λ dependence of the light transmittance of the Au-film/BiY₂Fe₅O₁₂/Au-NP and Au-film/BiY₂Fe₅O₁₂ samples. (b) λ dependence of V/P in the Au-film/BiY₂Fe₅O₁₂/Au-NP and Au-film/BiY₂Fe₅O₁₂ samples, measured when H of H=200 Oe was applied along the x direction. The Au-film/BiY₂Fe₅O₁₂/Au-NP sample was illuminated with monochromatic light with the wavelength λ, power P, bandwidth of 50 nm and spot diameter of ~5 mm from the Au-film side at normal incidence.