Ultrasensitive core for magnetooptical fluxgate magnetometer with high space resolution
| Autor: | Petr Mikhailovich Vetoshko, Vladimir A. Skidanov |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Materials science
Magnetometer business.industry Magnetostatic barrier General Medicine Fluxgate magnetometer Coercivity Fluxgate compass Magnetic field law.invention Magnetization symbols.namesake Optics law Faraday effect symbols Faraday rotation Single domain business Saturation (magnetic) Domain wall Engineering(all) Ferrite garnet film |
| Zdroj: | Procedia Engineering. :989-992 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2010.09.275 |
| Popis: | New type of fluxgate magnetometer core on the basis of magnetooptical uniaxial Bi-substituted garnet film was designed, numerically modeled and investigated experimentally. Magnetooptical garnet film with weak magnetization exhibits extremely high sensitivity with relation to external magnetic field. High sensitivity is achieved by single domain wall displacement in film area restricted by potential barriers. High amplitude magnetooptical response was received from garnet film element with special shape in space region 20–200 mcm. Magnetic field value for sensitive element saturation and garnet film coercive field were found in the same range 20–200 /m. Used in fluxgate regime garnet film sensitive element can provide space resolution better 10 mcm with magnetic field sensitivity higher than that one of traditional fluxgate. Presented approach possesses to avoid temperature adjustment and inductive coils application in high sensitive magnetometers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|