Tl2Ba2CaCu2O8 films: Growth and applications in dc SQUIDs and microwave devices

Y. F. Chen, Z. G. Ivanov, L. G. Johansson, R. I. Kojouharov, I. M. Angelov, E. Olsson, V. A. Roddatis, E. A. Stepantsov, A. Y. Tzalenchuk, A. L. Vasiliev, T. Claeson

Research output: Contribution to journalArticlepeer-review


Tl-2212 thin films were grown ex situ in a two step process on a variety of substrates, including ones with artificially introduced high angle steps. Grain boundary weak links were formed on LaAlO3 substrates with steps and on bicrystal substrates and were employed in dc SQUIDs. The white noise level of the SQUIDs was 50 mu Phi(0)/root Hz at 77 K. A 12.5 GHz HEMT oscillator stabilized with a Tl-2212 resonator gave 8-10 dB lower phase noise than using a gold resonator.
Original languageEnglish
Pages (from-to)2498-2501
Number of pages4
JournalIEEE transactions on applied superconductivity
Issue number2
Publication statusPublished - 1997

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