| 发明名称 |
MAGNETO-OPTICAL ELEMENT AND MAGNETIC FIELD MEASUREMENT APPARATUS |
| 摘要 |
The present invention relates to a magneto-optical element which is made of a bismuth-substituted rare earth iron garnet crystal of a formula (BiXGdYRZY3-X-Y-Z) (Fe5-WGaW)O12, wherein R designates an element selected among rare earth elements, wherein 0.8 </= X </= 1.3, 0.1 </= Y </= 0.3, 0.1 </= Z </= 1.0 and 0.3 </= W </= 0.8. The magneto-optical element has a constant sensitivity less than +/-4.0 % between -50 and +100 DEG C around room temperature. Further, a magnetic field measurement apparatus comprises the magneto-optical element and a light source of a central wavelength in the 0.8 mu m band. A magnetic field measurement apparatus with use of the magneto-optical element is stable against temperature change for practical use. <IMAGE> |
| 申请公布号 |
EP0510621(A3) |
申请公布日期 |
1993.12.08 |
| 申请号 |
EP19920106901 |
申请日期 |
1992.04.23 |
| 申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ITOH, NOBUKI;YAMADA, HIROKAZU |
| 分类号 |
C30B19/02;G01R33/032;G02F1/09;H01F1/34;H01F10/24;H01F10/28 |
主分类号 |
C30B19/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
