Search Results - "Veira, J.A."

Inductive Superconducting Fault Current Limiters With Y123 Thin-Film Washers Versus Bi2223 Bulk Rings as Secondaries by Osorio, M.R., Lorenzo, J.A., Toimil, P., Ferro, G., Veira, J.A., Vidal, F.

“…We present the comparison between the performance of an inductive superconducting fault current limiter operating with bulk Bi 1.8 Pb 0.26 Sr 2 Ca 2 Cu 3 O…”
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Measurements of the force between superconducting rings and calculation of the induced currents by Briones Galán, G., Paredes, E., Veira, J.A., Mosqueira, J., Romaní, L., Domarco, G.

“…•We propose a procedure to induce in superconducting rings very high currents, close to the depairing current in thin film rings.•Our procedure allows the…”
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Thermal behaviour of high-temperature superconducting fault current limiters: Application to by Lorenzo-Fernández, J.A., Osorio, M.R., Veira, J.A., Tello, M.J., Vidal, F.

“…Fault current limiters are one of the most promising applications of high-temperature superconductors. Two important and interrelated aspects of these devices…”
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Thermal behaviour of high-temperature superconducting fault current limiters: Application to microlimiters by Lorenzo-Fernández, J.A., Osorio, M.R., Veira, J.A., Tello, M.J., Vidal, F.

“…Fault current limiters are one of the most promising applications of high-temperature superconductors. Two important and interrelated aspects of these devices…”
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Probing the precursor Cooper pairs in superconductors with magnetic impurities by Soto, F., Mosqueira, J., Ramallo, M.V., Veira, J.A., Vidal, F.

“…The magnetization induced by superconducting fluctuations, Δ M, has been measured as a function of temperature above T C in La and in La alloyed with magnetic…”
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Comparison of current–voltage characteristics of YBa 2Cu 3O 7− δ melt-textured samples and films up to the superconducting normal transition by González, M.T., Viña, J., Currás, S.R., Veira, J.A., Maza, J., Vidal, F.

“…Current–voltage characteristics (CVCs), up to current densities several times the critical current density J c, are presented for melt-textured samples and…”
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Breakdown of the superconducting fluctuations by a magnetic field by Soto, F., Carballeira, C., Mosqueira, J., Ramallo, M.V., Ruibal, M., Veira, J.A., Vidal, F.

“…We have measured the diamagnetism induced in the normal state by the superconducting fluctuations in Pb 1 - x In x alloys. The experiments were performed with…”
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Normal-state resistivity versus critical current in YBa 2Cu 3O 7− δ thin films at high current densities by Currás, S.R, Viña, J, Ruibal, M, González, M.T, Osorio, M.R, Maza, J, Veira, J.A, Vidal, F

“…We report measurements at zero applied magnetic field of the normal state resistivity against temperature, ρ( T), and of the characteristic curves ( E– J) in…”
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Comparison of current–voltage characteristics of YBa2Cu3O7−δ melt-textured samples and films up to the superconducting normal transition by González, M.T., Viña, J., Currás, S.R., Veira, J.A., Maza, J., Vidal, F.

“…Current-voltage characteristics (CVCs), up to current densities several times the critical current density Jc, are presented for melt-textured samples and…”
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Normal-state resistivity versus critical current in YBa2Cu3O7−δ thin films at high current densities by Currás, S.R, Viña, J, Ruibal, M, González, M.T, Osorio, M.R, Maza, J, Veira, J.A, Vidal, F

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Thermal recovery of an inductive fault current limiter under different refrigeration conditions by Osorio, M.R, Ruibal, M, Currás, S.R, Veira, J.A, Maza, J, Vidal, F

“…We report new experimental results on the thermal behaviour of an inductive fault current limiter prototype based on a superconducting Bi-2223 tube. Our…”
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Influence of the surface melting of Y 1Ba 2Cu 3O 7 − δ polycrystalline samples on their resistivity and critical currents by Currás, S.R., Domarco, G., Cabeza, O., Veira, J.A., Vidal, F.

“…Measurements of the electrical resistivity, ρ, and of the critical current, I c, of polycrystalline Y 1Ba 2Cu 3O 7 − δ samples before and after being melted…”
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Magnetization experiments around Tc in cuprate superconductors: thermal fluctuation, random orientation and inhomogeneity effects by Torrón, C, Mosqueira, J, Currás, S.R, Veira, J.A, Revcolevschi, A, Vidal, F

“…We present some measurements of the crossing point of the excess magnetization vs. temperature curves, (Δ M*, T*), and of the Meissner fraction, χ FC( T), in…”
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New aspects of the thermopower peak anomaly near the superconducting transition in Y 1Ba 2Cu 3O 7−δ compounds: thermal fluctuations versus oxygen content inhomogeneities by Mosqueira, J., Veira, J.A., Maza, J., Cabeza, O., Vidal, Félix

“…The anomalous sharp peak of the thermoelectric power, S( T), that we have recently observed just above the superconducting transition in some non-fully…”
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New aspects of the thermopower peak anomaly near the superconducting transition in Y1Ba2Cu3O7-δ compounds : thermal fluctuations versus oxygen content inhomogeneities by MOSQUEIRA, J, VEIRA, J. A, MAZA, J, CABEZA, O, VIDAL, F

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Construction and characterization of an inductive superconducting current limiting device based on ceramic Y 1Ba 2Cu 3O 7 − δ O-rings by Currás, S.R., Santos, R., Domarco, G., Díaz, A., Veira, J.A., Maza, J., François, M.X., Vidal, F.

“…Experimental results about the response of a small-scale superconducting inductive device as current limiter are reported. The device is based on ring-shaped…”
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Influence of the surface melting of Y1Ba2Cu3O7-δ polycrystalline samples on their resistivity and critical currents by CURRAS, S. R, DOMARCO, G, CABEZA, O, VEIRA, J. A, VIDAL, F

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Normal state versus paracoherent resistivity in granular copper-oxide superconductors by Díaz, A., Mosqueira, J., Veira, J.A., Maza, J., Vidal, F.

“…In granular superconductors there are two distinct measurable electrical resistivities, namely the normal state resistivity and the paracoherent resistivity…”
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Construction and characterization of an inductive superconducting current limiting device based on ceramic Y1Ba2Cu3O7-δ O-rings by CURRAS, S. R, SANTOS, R, DOMARCO, G, DIAZ, A, VEIRA, J. A, MAZA, J, FRANCOIS, M. X, VIDAL, F

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Magnetoresistivity near the superconducting transition of high temperature copper oxide superconductors with non-uniformly distributed Tc inhomogeneities by Mosqueira, J., Siebold, Th, Pomar, A., Díaz, A., Veira, J.A., Maza, J., Vidal, F.

“…We have measured the in-plane magnetoresistivity, p(T,H), of YBa 2Cu 3O 7 − δ, Bi 2Sr 2Ca-Cu 2O 8 and TI 2Ba 2Ca 2Cu 3O 10 crystals with small stoichiometric…”
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