Far-Infrared Ferromagnetic Resonance of Magnetic Garnet for High Frequency Electromagnetic Sensor
| Autor: | Toshitaka Ota, Hiroyasu Ota, Daisuke Uematsu, Kazushi Ishiyama, Hitoshi Ohta, Masanori Takahashi, Ken Ichi Arai, Susumu Okubo, Nobuyasu Adachi, S Fujisawa, Katsumi Kawasaki |
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| Rok vydání: | 2010 |
| Předmět: |
Condensed Matter::Materials Science
Paramagnetism Materials science Condensed matter physics Magnetic moment Magnetic core Magnetic resonance force microscopy Electrical and Electronic Engineering Inductor Magnetic susceptibility Ferromagnetic resonance Electronic Optical and Magnetic Materials Magnetic field |
| Zdroj: | IEEE Transactions on Magnetics. 46:1986-1989 |
| ISSN: | 0018-9464 |
| DOI: | 10.1109/tmag.2010.2041328 |
| Popis: | For the sensor probe of high frequency magnetic field in GHz region, films were prepared by liquid phase epitaxy technique and ferromagnetic resonances were investigated in high frequency region. Magneto-optical (MO) effect of magnetic garnet was utilized for the imaging sensor of the magnetic field distribution. However, for the application to the characterization of high frequency magnetic field in the GHz frequency region, usual MO measurements are difficult to detect the magnetic filed as the decreasing of the permeability of magnetic garnet. Magnetic resonance is an effective way to induce magnetic moment and enhance the magnetooptical effect in high frequency region of GHz order. In order to understand the possibility of magnetic field sensor of high frequency in detail, far-infrared magnetic resonances were measured at the high frequencies up to 315 GHz in pulsed high magnetic field. Taking account into sensitivity of MO signals and magnetic resonance intensities, magnetooptical method using a garnet film is effective at the frequencies below 100 GHz. |
| Databáze: | OpenAIRE |
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