| 简介 |
PROBLEM TO BE SOLVED : To provide a method for making a Faraday rotator having a low saturation magnetic field and excellent in temperature property, and to provide the Faraday rotator.
SOLUTION : The Faraday rotator is formed from a bismuth-substituted rare-earth iron garnet single crystal which contains Ca and is represented by chemical formula : TbyGdxCawBi3-x-y-wFe5-zAlzO12, wherein 0.15≤y/x≤0.65, 0.3≤z≤0.5, and 0.04≤w≤0.1, and a saturation magnetic field of ≤200 (Oe) and a temperature property of ≤0.07 deg/°C are attained at room temperature in a product shape.
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