| 摘要 |
PURPOSE:To grow a magneto-optical crystal having less variation in characteristics in a film thickness direction by holding the melting of a melt at high temperature for a predetermined time, then reducing the temperature, holding it for a predetermined time, melting it, then further decreasing the temperature and the crystal is formed on a substrate by liquid growth. CONSTITUTION:When a thick film of Bi-substituted garnet crystal is formed on a nonmagnetic garnet substrate by liquid growth, the melting of a melt is held at high temperature T1 from t1 to t2, then held at temperature T2 from t3 to t4 to melt it at two stages, then further the temperature is reduced to T3 to form a crystal on the substrate by liquid growth. In this case, T1 is 1,100+ or -40 deg.C, T2 is 850+ or -50 deg.C and T3 is 730 deg.C. Thus, a magneto-optical crystal having less variation in characteristics in a film thicknesswise direction is grown by an extremely simple method.
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