Abstract
A microwave superconducting magnetometer is described in which a microstrip resonator is coupled to a two-hole high-T c thin-film SQUID device. Both the microstrip circuit and the thin-film SQUID were fabricated by photolithography techniques. The YBCO thin film was deposited on single-crystal substrate of yttria-stabilized zirconia [YSZ(100)] by an ion beam sputtering technique producing a superconducting transition measured at a critical temperature ofT c =92 K to within ΔT ∼ 3 K. Non linear oscillatory behavior was observed in the microstrip resonator when inductively coupled to the SQUID. This nonlinear behavior yielded a microwave device in which the reflected microwave power varied with applied DC magnetic flux.
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Huang, Y., Jiang, H., How, H. et al. Observation of X-band SQUID signals in a High-T c superconducting film device. J Supercond 3, 441–446 (1990). https://doi.org/10.1007/BF00617473
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DOI: https://doi.org/10.1007/BF00617473