Title :
High T/sub c/ RF-SQUID galvanometer
Author :
Chiao Wei-Chuan ; Xiao Liang-Xi ; Zhong Qing ; Wang Tong-Xiao
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
Abstract :
A high-T/sub c/ superconducting galvanometer with a sensitivity of 2*10/sup -12/ A/ square root Hz for input resistance of 250 Omega is reported. Its sensor is a YBaCuO RF SQUID (superconducting quantum interference device) that operates at 77 K. In the absence of high-T/sub c/ superconducting wires, this RF SQUID solves the problem of coupling between the signal and SQUID ring very well.<>
Keywords :
SQUIDs; barium compounds; electric sensing devices; high-temperature superconductors; yttrium compounds; 250 ohm; 77 K; RF SQUID; YBaCuO; coupling; high temperature superconductor; high-T/sub c/ superconducting galvanometer; superconducting quantum interference device; Ceramics; Coils; Critical current; High temperature superconductors; Josephson junctions; Resonance; SQUIDs; Superconducting materials; Superconductivity; Yttrium barium copper oxide;
Conference_Titel :
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location :
Ottawa, Ontario, Canada
DOI :
10.1109/CPEM.1990.109953
