- 著者
-
千田 正勝
武井 弘次
石井 修
越本 泰弘
戸島 知之
- 出版者
- 公益社団法人 日本磁気学会
- 雑誌
- 日本応用磁気学会誌 (ISSN:02850192)
- 巻号頁・発行日
- vol.19, no.2, pp.465-468, 1995-04-01 (Released:2007-11-07)
- 参考文献数
- 13
- 被引用文献数
-
4
4
This study reports on the performance of a thin-film magnetic sensor that uses impedance change at a high frequency. A closed magnetic circuit, a strip pattern for the magnetic films, and an NiFe/SiO2 multilayer film structure were adopted for high sensitivity and large voltage change. A voltage change ratio of 50-60% was achieved by applying an external field of several Oe with an AC carrier of ∼800 MHz. The sensor was confirmed to perceive a highfrequency external field as an amplitude modulation of the AC carrier voltage, and exhibited broad frequency bandwidth, high linearity, and no hysteresis or Barkhausen noise.