Fig. (2) Dependencies of refraction indexes of both branches of
spin wave n+ and n- on value of external homogeneous magnetic
field H0. α1 = 5.44×10-11 cm2, α2 = 6×10-11 cm2, β1 = 10, β2 = 15, ρ2
= 2, L1 = 25×105 cm-1, L2 = 30×105 cm-1, M01 = 105 G, M02 = 95 G,
ω = 2×1011 s-1.
