MAGNETOOPTICAL STUDIES OF YIG(CAGE) THICK-FILM

Measurements of magneto-optical spectra of an yttrium iron garnet samp le doped with calcium and germanium were performed in polar Kerr geome try at normal incidence at room and liquid-helium temperature. The res ults at room temperature are compared with a theoretical calculation c onsidering incoherent superposition of multiple reflections originatin g from the two surfaces of the sample. The estimated spectrum is in go od qualitative agreement with that observed experimentally. The presen ce of a quantitative discrepancy is discussed.