| 简介 |
PROBLEM TO BE SOLVED : To suppress the variation width of magnetic properties to the minimum even when a work for growing a bismuth-substituted rare earth iron garnet single crystal film by an LPE method is repeatedly performed many times.
SOLUTION : In a method comprising filling a melt composed of a PbO-B2O3-Bi2O3 flux component and bismuth-substituted rare earth iron garnet components, and then repeatedly performing the work for growing the bismuth-substituted rare earth iron garnet LPE film on a non-magnetic garnet substrate by the LEC method, after performing the growth work one time or a plurality of times, an element becoming a main constitutive component of the LPE film to be grown and having action making the compensation temperature of the LPE film shift to the high temperature side is added excessively into the melt in addition to the addition of the materials equivalent to the grown crystal components to the melt. Thereby, the shift of the compensation temperature to the low temperature side caused by mixing of platinum into the melt is reduced or canceled out.
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