Chin. Phys. Lett.  1993, Vol. 10 Issue (3): 132-134    DOI:
Original Articles |
A TlBaCaCuO Thin Film Planar dc-Squid Magnetometer
CHEN Lie;ZHANG Lihua;WENG Yaojun;YANG Tao1;LIU Dong1;SHAO Kai2;YAN Shaolin3
Institute of Physics, Academia Sinica, Beijing 100080 1also Department of Physics, Northwest University, Xi’an 710069 2Nanjing Electronic Devices institute, Nanjing 210026 3Department of Electronic, Nankai University, Tianjin 300071
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CHEN Lie, ZHANG Lihua, WENG Yaojun et al  1993 Chin. Phys. Lett. 10 132-134
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Abstract A superconducting quantum interference device (squid) was made from TlBa-CaCuO(TBCCO) thin film. The squid loop forms a part of the pickup loop. The squid hole is a square of about 100x100μm. The pickup loop and the squid loop inductances are estimated to be 11 nH and 190pH, respectively. The best value of equivalent flux noise as measured in the flux locked loop mode is 4x10-4 Ф0 / Hz1/2 at dc-1 Hz. The corresponding sensitivity resolution at this frequency is 9pT/Hz1/2, about a factor 8 higher than the squid loop area.
Keywords: 06.70.Dn      74.75.+t     
Published: 01 March 1993
PACS:  06.70.Dn  
  74.75.+t  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y1993/V10/I3/0132
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CHEN Lie
ZHANG Lihua
WENG Yaojun
YANG Tao
LIU Dong
SHAO Kai
YAN Shaolin
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