摘要
我们在制备了TlBaCaCuO薄膜DC—SQUID的基础上,又研制了平面型带磁通变换器的DC—SQUID。磁通变换器与DC—SQUID制备在同一片薄膜衬底上,避免了分立单片耦合对准的困难.带磁通变换器的DC—SQUID在磁通锁定模式下,在77K温度中,在0～1Hz处测量磁通噪声为4.9×10^(-4)φo/Hz^(1/2),作为磁强计使用,磁场灵敏度提高了6倍。
A DC-SQUID of T1-based thin Films has been developed,and a DC-SQUID with flux transformer has also been made.The flux transformer and DC-SQUID were fabricated on same thin film substrate, avoiding the difficulty of single chip coupling alignment between flux transformer and DC-SQUID.The preliminary measurements show with flux transformer the magnetic field sensitivity can be improved by six times compared to the bare DC-SQUID as a magnetometer.
出处
《低温与超导》
CAS
CSCD
北大核心
1992年第4期20-23,共4页
Cryogenics and Superconductivity
