Among other magneto-optic materials bismuth subtituted yttrium iron garnet (Bi_xY_(1-x))_3 Fe_5O_(12) has the highest Faraday rotation effect in vistible region. Completely substituted bismuth iron garnet Bi_3Fe_5O_(12) (BIG) films have been grown by pulsed laser depsotion technique onto (111) (NdGd)_3O_(12) single crystal with l attice constant of 12.623 A. X-ray diffraction proves epitaxial film quality. VSM measurements yield the saturation magnetization 4 #mu# M_s chemical bounds 1100 G and coercive field is about 50 Oe. Ferromagnetic resonance (FMR) method reveals perpendicular magnetic anisotropy in fabricated films. Angular measurements of FMR give the constants of uniaxial and cubic anisotropy in BIG film: K_u chemical bounds 5.9x10~4 erg/cm~3 and K_1 chemical bounds - 6.95x10~3 erg/cm~3. The Faraday rotation has been found to reach-7.8 deg/#mu# m at 630 nm.
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