发明公开
EP0732709A1 Magneto-optical element and optical magnetic field sensor using the same
失效
Magnetooptisches元素和光栅Magnetfeldfühler
- 专利标题： Magneto-optical element and optical magnetic field sensor using the same
- 专利标题（中）： Magnetooptisches元素和光栅Magnetfeldfühler
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申请号： EP96104073.0申请日： 1996-03-14
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公开(公告)号： EP0732709A1公开(公告)日： 1996-09-18
- 发明人: Itoh, Nobuki , Minemoto, Hisashi , Ishiko, Daisuke , Ishizuka, Satoshi
- 申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 申请人地址： 1006, Oaza Kadoma Kadoma-shi, Osaka-fu, 571 JP
- 专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人地址： 1006, Oaza Kadoma Kadoma-shi, Osaka-fu, 571 JP
- 代理机构： Finsterwald, Manfred, Dipl.-Ing., Dipl.-Wirtsch.-Ing.
- 优先权： JP58935/95 19950317
- 主分类号： H01F10/24
- IPC分类号： H01F10/24 ; G01R33/032
摘要：
This invention relates to a magneto-optical element which comprises a film of a Bi-substituted rare earth iron garnet selected from garnets of the following chemical formulas
(Bi x Gd y R z Y 3-x-y-z )(Fe 5-w Ga w )O 12
wherein R represents at least one element selected from rare earth elements other than Gd, and x, y, z and w are such that 1.00≦x≦1.30, 0.42≦y≦0.60, 0.01≦z≦0.05 and 0.40≦w≦0.62, and
(Bi x' Gd y' R z' Y 3-x'-y'-z' )Fe 5 O 12
wherein R is as defined above, and x', y' and z' are such that 1.10≦x'≦1.30, 1.00≦y'≦1.80, 0≦z'≦0.06 provided that x' + y' ≦3. An optical magnetic field sensor capable of detecting zeroth to higher order beams of diffracted light is also described.
(Bi x Gd y R z Y 3-x-y-z )(Fe 5-w Ga w )O 12
wherein R represents at least one element selected from rare earth elements other than Gd, and x, y, z and w are such that 1.00≦x≦1.30, 0.42≦y≦0.60, 0.01≦z≦0.05 and 0.40≦w≦0.62, and
(Bi x' Gd y' R z' Y 3-x'-y'-z' )Fe 5 O 12
wherein R is as defined above, and x', y' and z' are such that 1.10≦x'≦1.30, 1.00≦y'≦1.80, 0≦z'≦0.06 provided that x' + y' ≦3. An optical magnetic field sensor capable of detecting zeroth to higher order beams of diffracted light is also described.
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