INVESTIGATION OF THIN-FILM DE SQUID GRADIOMETER USING A SINGLE YBCO LAYER

被引：10
|
作者：
SEIDEL, P
ZAKOSARENKO, V
SCHMIDL, F
DORRER, L
SCHNEIDEWIND, H
LINZEN, S
ILICHEV, EV
DARULA, M
机构：
[1] RUSSIAN ACAD SCI,INST MICROELECTR TECHNOL,CHERNOGOLOVKA 142432,RUSSIA
[2] SLOVAK ACAD SCI,INST ELECT ENGN,BRATISLAVA 84239,SLOVAKIA
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期
关键词：
10;
D O I：
10.1109/77.403206
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：
Thin film dc SQUID gradiometers with a large effective pickup area using only a single YBa2Cu3O7-x layer and step edge Josephson junctions on SrTiO3 substrate have been prepared. The planar gradiometer consist of two loops coupled directly to a small area SQUID in the renter of the structure. The main advantage in comparison to magnetometers is the possibility of direct measurements in magnetically unshielded environment. At 77 K without bias reversal technique we obtain a white noise level about 3.6*10(-5) Phi(0)/Hz(1/2) or 700 fT/cmHz(1/2). Some peculiarities for two SQUID arrangement with 4 Josephson junctions are observed and simulated on the base of RSJ model.
引用
收藏
页码：2931 / 2934
页数：4
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