Laser scanning imaging and local characterization of superconducting properties in high-Tc thin film multiturn coil

A.G. Sivakov, A.P. Zhuravel, O.G. Turutanov, I.M. Dmitrenko, Johannes W.M. Hilgenkamp, G.C.S. Brons, Jakob Flokstra, Horst Rogalla

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Low-temperature scanning laser microscopy has been used to investigate the spatial variation of the critical temperature Tc and critical current Ic in thin-film high-Tc multilayer structures that include dielectric layers. The method is described and measurements are presented on an YBa2Cu3O7-x-based multiturn coil with SrTiO3 insulating layer. We found that the critical temperature Tc of the YBa2Cu3O7-x top layer, from which the return strip of the coil is formed, is higher than that of the YBa2Cu3O7-x base layer. The critical current of the coil is limited by the quality of the YBa2Cu3O7-x base layer and not by the edges of the crossovers.
Original languageUndefined
Pages (from-to)93-98
Number of pages6
JournalPhysica C
Issue number1-2
Publication statusPublished - 1994


  • IR-23769
  • METIS-128568

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