ON THE SENSITIVITY OF HIGH-TC SUPERCONDUCTING CERAMICS AS MAGNETIC-FIELD SENSORS

被引:0
|
作者
RILLO, C
ANGUREL, LA
BARTOLOME, J
GONZALO, J
LERA, F
NAVARRO, R
MARTINEZ, A
TELLEZ, P
机构
[1] UNIV ZARAGOZA,CPS,DEPT INGN ELECTR & INFORMAT,E-50015 ZARAGOZA,SPAIN
[2] UNIV ZARAGOZA,FAC CIENCIAS,SIC,E-50009 ZARAGOZA,SPAIN
关键词
D O I
10.1016/0924-4247(91)87086-I
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
The granularity of high-temperature superconductors is the limiting factor to most applications, since the intergrain critical currents and fields are extremely low. However, this same feature leads to a potentially important application in magnetometry, using the high sensitivity of the even harmonic terms of the a.c. susceptibility to magnetic fields. A theoretical and experimental study of the sensitivity of high-temperature superconducting materials as magnetic field sensors has been done in the context of critical state models. The feasibility of a magnetometer based on this sensor operating in a negative feedback loop is demonstrated and criteria to optimize its performance to the nT range are given.
引用
收藏
页码:775 / 780
页数:6
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