SQUID MAGNETOMETER NOISE MEASUREMENTS ON YBA2CU3O7 THIN-FILMS AND INPUT COILS

被引：6
|
作者：
DIIORIO, MS
YANG, KY
ZHANG, J
YOSHIZUMI, S
MAUNG, M
机构：
[1] Biomagnetic Technologies, Inc., San Diego, CA 92121
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 02期
关键词：
D O I：
10.1109/20.133741
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：
A SQUID magnetometer system incorporating a Nb-based conventional SQUID operating at 4.8 K was used to measure the magnetic field noise from high-T(c) input coils and unpatterned films at 77 K. The system allows for the rapid measurement of relatively large regions of high-T(c) material. The results on numerous coils and films show the noise decreasing as a function of increasing film critical current density at 77 K. High-T(c) films with J(c)(77K) = 3 x 10(6) A/cm2 appear suitable for use as input coils in SQUID magnetometer applications requiring low noise at frequencies down to 1 Hz.
引用
收藏
页码：2573 / 2577
页数：5
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