Magnetooptical properties of cerium-substituted yttrium iron garnet single crystals for magnetic-field sensor
| Autor: | Sadao Higuchi, Kiyotaka Uyeda, Kenji Kitamura, Shunji Takekawa, Osamu Kamada, Yasunori Furukawa |
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| Rok vydání: | 2003 |
| Předmět: |
Steady state
Chemistry Metals and Alloys Yttrium iron garnet Analytical chemistry chemistry.chemical_element Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Magnetic field Crystal Cerium symbols.namesake chemistry.chemical_compound Nuclear magnetic resonance Absorption edge Faraday effect symbols Electrical and Electronic Engineering Instrumentation |
| Zdroj: | Sensors and Actuators A: Physical. 105:293-296 |
| ISSN: | 0924-4247 |
| Popis: | The magnetooptical properties and magnetic-field-sensing properties of bulk Ce-substituted YIG (Ce x Y 3− x Fe 5 O 12 ) crystals were studied. There was an absorption edge at 1200 nm and a large negative Faraday rotation was obtained. Faraday rotation was increased to a greater extent by Ce substitution than by Bi substitution. The magnetic-field sensitivity of Ce 0.24 Y 2.76 Fe 5 O 12 was 0.0048% m/A which was larger than that of (BiGdLaY) 3 (FeGa) 5 O 12 . The optical current transformer (CT), using a Ce:YIG crystal as a sensor head, could measure the alternating steady state, faulting, breaking and reclosing currents. These results suggest that cerium-substituted yttrium iron garnet is a high-performance material suitable for magnetic-field (or electric-current) sensors. |
| Databáze: | OpenAIRE |
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