| 简介 |
PROBLEM TO BE SOLVED : To provide a Faraday rotator made of Bi-substituted rare-earth iron garnet eliminating the need for a magnetic field application means for saturating magnetization or capable of sufficiently saturating magnetization with a weak magnetic field.
SOLUTION : The Faraday rotator comprises a polycrystalline Bi-substituted rare-earth iron garnet including magneto-optical effect. The polycrystalline body comprises a plurality of crystal grains of Bi-substituted rare-earth iron garnet different in magnetic anisotropy energy.
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