Serial array high T/sub c/ SQUID magnetometer
Serial array high T/sub c/ SQUID magnetometer
复制标题
串行阵列高 T/sub c/ SQUID 磁力计
DOI：
10.1109/77.622083
复制
发表时间：
1997
影响因子：
1.8
通讯作者：
Jong
中科院分区：
文献类型：
--
作者：
Soon;Y. Huh;G. Park;In;Y. Park;Jong
采用脉冲激光薄膜沉积和离子铣图形化技术，在YBa/sub 2/Cu/sub 3/O/sub 7/ dc SQUID串联阵列上制备了SQUID磁强计。该阵列可以设计成具有通量聚焦器的线性链或弯曲结构。该阵列由50-130个阶边结SQUID组成，每个SQUID的电感为20-40 pH，结宽为2-5 μ m。50个SQUID的线性阵列显示出150 /spl mu/V的调制幅度，其对应于/spl sim/10的增益。80个SQUID曲折阵列中的一个具有高达50的增益。这些结果提供了SQUID串联阵列在宽带宽直接读出SQUID放大电路中的可行性。需要研究更大数量的SQUID阵列和将增益增加到理论值的过程。
SQUID magnetometers have been fabricated from series arrays of YBa/sub 2/Cu/sub 3/O/sub 7/ dc SQUIDs by pulsed laser film deposition and ion mill patterning techniques. The array was designed either in linear chain with flux focusers or in meander structure. The arrays consisted of 50-130 step-edge junction SQUIDs and each SQUID had inductance of 20-40 pH with 2-5 /spl mu/m junction width. A linear array of 50 SQUIDs showed a modulation amplitude of 150 /spl mu/V which corresponds to a gain of /spl sim/10. One of 80 SQUID meander arrays had a gain of as high as 50. These results provide feasibility of the series array of SQUIDs in the direct readout SQUID amplifier circuitry with wide bandwidth. Larger number SQUID arrays and processes to increase the gain to the theoretical value need to be studied.