Low 1/f flux noise in sputtered YBa2Cu3O7−x bicrystal dc-superconducting quantum interference devices
作者： E. Sarnelli , C. Camerlingo , M. Russo , G. Torrioli , M. G. Castellano
DOI: 10.1063/1.365698
关键词:
摘要: YBa2Cu3O7−x bicrystal dc-superconducting quantum interference devices (SQUIDs) and single layer magnetometers working at 77 K have been fabricated analyzed. Samples made in situ by cylindrical magnetron dc sputtering on [001] SrTiO3 substrates. Magnetic flux noise levels magnetic field sensitivities standard flux-locked-loop electronics measured out dc-SQUIDs magnetometers, respectively. Flux as low a few μΦ0Hz−1/2 the white regime SQUIDs, whereas sensitivity of was influenced external sources. A comparison experimental data with analytical expressions modelling behavior high Tc SQUIDs has carried out, special reference to flux-to-voltage transfer parameter characteristics. Finally, reduction 1/f achieved wide band bias reversal electronics.
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