Characteristics of integrated high-Tc superconducting quantum interference device magnetometer and gradiometer with serial array

被引：4
|
作者：
Yang, Hong-Chang [1 ]
Wu, C. H.
Chen, J. C.
Chen, K. L.
Horng, Herng-Er
Tsai, Yi-Shou
Yang, S. Y.
机构：
[1] Natl Taiwan Univ, Dept Phys, Taipei 116, Taiwan
[2] Natl Taiwan Normal Univ, Dept Phys, Taipei 106, Taiwan
[3] Natl Taiwan Normal Univ, Inst Electroopt Sci & Technol, Taipei 116, Taiwan
来源：
JOURNAL OF APPLIED PHYSICS | 2007年 / 102卷 / 02期
关键词：
SQUID MAGNETOMETER; NOISE; SENSITIVITY;
D O I：
10.1063/1.2757005
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We characterized the current-voltage, voltage-flux, and the field sensitivity of integrated high-T-c series superconducting quantum interference device (SQUID) magnetometers and gradiometers. The series two-SQUID magnetometers shows field sensitivities of similar to 30-40 fT/Hz(1/2) at 1 kHz and similar to 80-100 fT/Hz(1/2) at 1 Hz over that of a one-SQUID magnetometer in shielded environment. The field sensitivity of a series two-SQUID gradiometers is similar to 60 fT/Hz(1/2) cm, while the one-SQUID gradiometer shows a gradient sensitivity of similar to 80-150 fT/Hz(1/2) cm at 1 kHz in an unshielded laboratory environment. The series two-SQUID magnetometers or gradiometers show a significant improvement in flux noises over that of one-SQUID magnetometers or gradiometers.
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页数：5
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