The application of high temperature superconductors in long term tokamak fusion reactors is analyzed in this paper. Properties of high temperature superconductors have been well documented that make them ideal for this application. Short-sample BSSCO wires and YBCO tapes approach their single-crystal performance limits. This provides a useful reference frame as well as a starting point of what ...

Abstract The presence of a metallic layer can influence the properties high-temperature superconductors underneath. We investigate structures deposited in form nanoparticles or continuous layers by electron beam evaporation ion sputtering on Y1Ba2Cu3O7-x (YBCO) thin films. To generally avoid diffusion metal atoms an additional barrier is introduced. Detailed measurements magnetic moment superco...

Abstract Two different types of monoclinic HfO 2 nanocrystals were employed in this work to study the effect nanocrystal shape and crystallinity on structural defects YBa2Cu3O7−δ (YBCO) matrix as it leads an enhancement pinning performances solution-derived YBCO nanocomposite films. In nanorod-like obtained from surfactant-controlled synthesis led short intergrowths surrounding particles, while...

In addition to the well investigated YBa2Cu3O7 d (Y-123, YBCO) compound, many other rare earth-123 compounds are candidate materials for the production of coated conductors. Sm-123 seems to be an excellent alternative because of its higher transition temperature (Tc) and higher critical current densities (Jc) in external magnetic fields. Because of the fast decrease of Jc in YBCO at elevated te...

One of the worst types of fault that a power system should be designed to withstand is a short circuit. Within the various types of fault current limiters, the superconducting fault current limiter (SFCL) has an extremely fast current limitation. The rapid switching action and the self-sensing nature of the superconductor make SFCLs particularly attractive in fault protection. This very fast ti...

Dependence of the phase and magnitude of the response of MgO substrate YBa2Cu3O7 d (YBCO) transition edge bolometers to the near infrared radiation on the superconducting transition width is presented in this work. The bolometers were made of YBCO thin films of 200 nm thickness that were grown on single crystal MgO (100) substrates by DC inverted cylindrical magnetron sputtering. We have measur...

186 LLE Review, Volume 95 Introduction High-temperature superconductors (HTS’s) exhibit many properties that are very desirable for microwave-based telecommunication applications. Their main advantages are low absorption at microwave frequencies1 and existence of HTS microwave devices based on the controlled vortex flux flow.2 The mostpromising material is the YBa2Cu3O7–x (YBCO) superconductor ...

Magnetization and 63Cu NMR-NQR relaxation measurements are used to study the superconducting fluctuations in YBa2Cu3O6+x (YBCO) oriented powders. In optimally doped YBCO the fluctuating negative magnetization Mfl(H,T ) is rather well described by an anisotropic Ginzburg-Landau (GL) functional and the curves Mfl/ √ H cross at Tc. In underdoped YBCO, instead, over a wide temperature range an anom...

A low-cost chemical solution deposition technique was employed to prepare YBa2Cu3O7-delta (YBCO) nanocomposite films starting from a colloidal containing preformed ZrO2 nanocrystals. As previous publications revealed, an increase in the amount of nanocrystals results progressive deterioration film properties. The parameters that control this process and their interplay are still unknown detail....

Solid-state synthesis from powder precursors is the primary processing route to advanced multicomponent ceramic materials. Designing routes usually a laborious, trial-and-error process, as heterogeneous mixtures of often evolve through complicated series reaction intermediates. Here, we show that phase evolution multiple can be modeled sequence pairwise interfacial reactions, with thermodynamic...