Many second phase additions to YBa₂Cu₃O7-x (YBCO) films, in particular those that self-assemble into aligned nanorod and nanoparticle structures, enhance performance in self and applied fields. Of particular interest for additions are Ba-containing perovskites that are compatible with YBCO. In this report, we discuss the addition of Ba₂YRuO₆ to bulk and thick-film YBCO. Sub-micron, randomly ori...

The paper presents the results of a study effect annealing on critical current YBCO Josephson junctions obtained by method preliminary topology mask bicrystalline substrate. A strong, more than two-fold increase in junction was detected. This opens up opportunities for managing current-voltage characteristic junctions. Keywords: junctions, annealing, YBCO.

Orthorhombic distortions may reconcile all the experimental data on YBCO. Abstract A lot of controversy appeared recently in measurements of different properties of High-T c-superconductor YBCO. A part of data supports d-wave hypothesis whereas other one contradicts it. We suggest to reconcile visibly controversial experimental data by an assumption that orthorombicity is not small for electron...

In our previous work, we have shown that a single-domain YBa2Cu3Ox (YBCO) exhibits a low surface resistance. However, the second phase Y2BaCuO5 (211) precipitates inevitably as a result of peritectic reaction. These 211 particles are potential sources of RF losses, which need to be eliminated. In this study, a non-fluorine sol–gel synthesis was developed to deposit a YBCO thin film on the surfa...

We report temperature dependent Andreev reflection measurements of Co/ Y1Ba2Cu3O7−δ (YBCO) heterostructure samples with junction areas of 1 μm diameter. Modelling of the 5-70 K conductivity data according to a modified Blonder-Tinkham-Klapwijk theory yields a spin polarization in Co film amounting to 34% which is almost constant up to 70 K. The YBCO films have been grown by pulsed laser deposit...

The use of Raman spectroscopy for on-line monitoring of the production of superconducting YBa2Cu3O6+X (YBCO) thin films on long-length metal tapes coated with textured buffer layers is reported for the first time. A methodology is described for obtaining Raman spectra of YBCO on moving tape exiting a metal-organic-chemical-vapor-deposition (MOCVD) enclosure. After baseline correction, the spect...

A new technique named plasma beam assisted deposition (PBAD) is proposed to grow in-plane textured yttria-stabilised zirconia (YSZ) thin films on polycrystalline metallic substrates as a buffer layer for deposition of YBa2Cu3Oy (YBCO) films. The in-plane texturing of the YBCO films obtained is decisively governed by that of the YSZ buffer layer on which the YBCO grows. Because of a reduction of...

We have carried out a systematic study of the resistive transition, and the detailed I-V characteristic in magnetic fields of the YBa$&@ (YBCO) single crystals and highly c-axis oriented YBCO thin film prepared by the laser ablation technique. Our data can be well described in the context of the model proposed by Fisher et al.,’ suggest that the existence of the vortex glass (or solid) to vorte...