Magneto-optical properties of highly Al-substituted (Y,Bi)/sub 3/(Fe,Al)/sub 5/O/sub 12/ sputtered films in short wavelength region

The films were prepared on 7059 glass substrates by RF sputtering. The effect of Al substitution on the magnetic and structural properties of Bi-substituted films is discussed. The limit of Bi substitution into the garnet phase was clarified for Al-substituted and nonsubstituted films. The microstructure of the films at the limiting composition and segregation compositions was examined by transmission electron microscopy and transmission high-energy electron diffraction observations. The electron and X-ray diffraction analyses for this composition range showed some diffraction peaks which could not be assigned to the garnet phase or the Bi/sub 2/Fe/sub 4/O/sub 9/ phase.<
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