Measurement of Shift in Voltage-Flux Characteristics of SQUID Having Washer Coil Due to Flux-Trapping
スポンサーリンク
概要
- 論文の詳細を見る
The relationship between the flux-trapping phenomenon and the device-structure of a SQUID has been studied using three types of SQUIDs ; a SQUID with a guard-ring, a SQUID with a moat, and a SQUID without these structures. The change in the voltage-flux characteristics of the SQUIDs due to the flux-trapping are measured. For the measurements, an acceleration of the flux-trapping is realized by applying a magnetic field during cooling of the SQUIDs. From the measured results, the SQUID with the guard-ring and that with the moat can reject the external magnetic field more effectively than the SQUID without these structures. The reason of the difference in the rejection of the external magnetic field is thought to be the existence of superconducting closed loops. However, the flux-trapping of the SQUID with the guard-ring and that with the moat occur more easily than the flux-trapping of the SQUID without these structures for the cooling under the finite magnetic field. Therefore, the moat structure and the guard-ring structure need a higher-grade magnetic shielding for a practical use.
- 社団法人電子情報通信学会の論文
- 1995-05-25
著者
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Takagi K
Advanced Research Laboratory Hitachi Ltd.
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Takagi Kazumasa
Central Research Laboratory Hitachi Ltd.
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NISHINO Toshikazu
Central Research Laboratory, Hitachi, Ltd
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Takagi Kazumasa
Central Research Laboratory Hitachi Lid.
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Takeda Eriko
Central Research Laboratory Hitachi Co. Ltd.
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Takeda Eriko
Central Research Laboratory Hitachi Ltd.
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Nishino Toshikazu
Central Research Laboratory Hitachi Ltd
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Nishino T
Mitsubishi Electric Corp. Kamakura‐shi Jpn
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