Improvement of the Sensitivity of a High-Frequency Carrier-Type Magnetic Field Sensor Through the Use of an Edge Extension Structure
| Autor: | N. Tachibana, K.I. Arai, Shin Yabukami, M. Sendoh, N. Horikoshi, Kazushi Ishiyama, N. Hoshi, T. Nakai, H. Suzuki |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
business.industry Demagnetizing field Field effect Edge (geometry) Condensed Matter Physics Electronic Optical and Magnetic Materials Magnetic field Optics Nuclear magnetic resonance Electrode Electrical and Electronic Engineering Thin film business Instrumentation Electrical impedance Sensitivity (electronics) |
| Zdroj: | Journal of the Magnetics Society of Japan. 30:225-228 |
| ISSN: | 0285-0192 |
| DOI: | 10.3379/jmsjmag.30.225 |
| Popis: | Improvement of the sensitivity of a high-frequency carrier-type (HFC-type) magnetic field sensor through the use of an edge extension structure is reported. The HFC-type magnetic field sensor is composed of a rectangular CoNbZr thin film with a coplanar-structure Cu thin film as an electrode. The edge extension structure causes reduction of the sensor's demagnetization field effect. A variation in the sensor impedance was obtained as a function of the external magnetic field for edge extension lengths ranging from X= 0 mm to X = 1 mm. The length of the sensor was 1 mm, the thickness was 2 μm, and the widths were 20 and 80 μm. It was demonstrated that the gain of an HFC-type magnetic sensor with an edge extension length of X = 1 mm was three times higher than that of a sensor with an edge extension length of X= 0 mm. This result shows that an edge extension structure improves the sensitivity of an HFC-type magnetic field sensor. |
| Databáze: | OpenAIRE |
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