INTEGRATED HIGH T-C SQUID MAGNETOMETER

被引：15

作者：

DAVID, B ^{[1
]}

GRUNDLER, D ^{[1
]}

KRUMME, JP ^{[1
]}

DOESSEL, O ^{[1
]}

机构：

[1] UNIV HAMBURG,INST PHYS APPL,D-20355 HAMBURG,GERMANY

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期

关键词：

D O I：

10.1109/77.403207

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have fabricated an integrated SQUID magnetometer based on Y1Ba2Cu3O7 step-edge Josephson junctions. A tight coupling between the input coil and the SQUID washer has been achieved with a coupling coefficient k of 0.9. Noise measurements on our SQUIDs showed a nearly frequency independent flux noise of 50 mu Phi(0)/root Hz at 77 K. 1/f-noise contributions at lower temperatures were always completely suppressed by bias reversal. From our measurements of the field sensitivity and the flux noise we can estimate a field resolution of the magnetometer of 60 fT/root Hz down to 1 Hz.

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收藏

页码：2935 / 2938

页数：4

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