Transparente Keramik für Magnetooptische Elemente und Magnetooptische Vorrichtung
Anmelder: SHIN-ETSU CHEMICAL CO., LTD. 🇯🇵
Details
- Veröffentlichungs-Nr.
- EP4722178
- Anmeldetag
- 21. Mai 2024
- Veröffentlichung
- 5. Dezember 2024
- Rechtsraum
- EP
Abstract
Provided are a transparent ceramic for a magneto-optical element and a magneto-optical device, which have practical transparency applicable to high power, and have a high thermal conductivity as compared with the related art, even a composite oxide containing a rare earth element having a large ionic radius. The transparent ceramic for a magneto-optical element includes a sintered body of a composite oxide represented by Formula (1), (Tb<sub>1-x-y</sub>R1<sub>x</sub>R2<sub>y</sub>)<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> ... Formula (1)wherein R1 represents Y or Lu, R2 represents Gd or La, and 0 < x ≤ 0.4, 0 < y ≤ 0.4, and 0.05 ≤ x + y ≤ 0.45 are satisfied. An average ionic radius of a rare earth element in the composite oxide satisfies Formula (2), Averageionicradius=1−x−yDTb+xDR1+yDR2<104.2wherein, D<sub>Tb</sub> represents an ionic radius of Tb<sup>3+</sup> at an 8-coordination site, D<sub>R1</sub> represents an ionic radius of R1<sup>3+</sup> at the 8-coordination site, and D<sub>R2</sub> represents an ionic radius of R2<sup>3+</sup> at the 8-coordination site. The magneto-optical device is an optical isolator including the transparent ceramic as a Faraday rotator 110.
Anmelder
- Firma
- SHIN-ETSU CHEMICAL CO., LTD.
- Land
- 🇯🇵 Japan
Japanisches Chemieunternehmen mit Sitz in Tokio. Shin-Etsu Chemical stellt Siliziumwafer für Halbleiter, Silikonprodukte, PVC und weitere Spezialchemikalien für Elektronik-, Bau- und Industrieanwendungen her.
1.545 Patente in unserer Datenbank