Microwave properties of DyBCO monodomain in the mixed state and comparison with other RE-BCO systems

N. Pompeo, R. Rogai, M. Ausloos, R. Cloots, A. Augieri, G. Celentano, E. Silva

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We report on microwave measurements on DyBa2Cu3O7-δmonodomains grown by the top-seeded melt-textured technique. We measured the field increase of the surface resistance Rs(H) in the a-b plane at 48.3 GHz. Measurements were performed at fixed temperatures in the range 70 K-Tcwith a static magnetic field μ0H < 0.8 T parallel to the c-axis. Low field steep increase of the dissipation, typical signature of the presence of weak links, is absent, thus indicating the single-domain behavior of the sample under study. The magnetic field dependence of Rs(H) is ascribed to the dissipation caused by vortex motion. The analysis of Xs(H) points to a free-flow regime, thus allowing to obtain the vortex viscosity as a function of temperature. We compare the results with those obtained on RE-BCO systems. In particular, we consider strongly pinned films of YBa2Cu3O7-δwith nanometric BaZrO3inclusions. © 2011 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)854 - 858
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Issue number21-22
Publication statusPublished - Nov 2011
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

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