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Time resolved nanosecond vortex dynamics in high Tc superconducting films
(Elsevier, 2004-01)
Flux dynamics in a high Tc superconducting thin film is investigated in the ns time scale. The initial metastable state is determined by applying a pulsed magnetic field to a sample previous cooled below the irreversibility ...
Thickness effects on the pinning by columnar defects
(Elsevier Science, 2000-11)
We compare the angular dependence of the pinning of equivalent columnar defects in GdBa2Cu3O7 thin films and a thicker YBa2Cu3O7 single crystal. The tracks' related enhancement of the critical currents is much smaller for ...
Effect of Boron powder purity on superconducting properties of bulk MgB2
(2007-09-01)
In order to study the influence of the amorphous Boron powder on the superconducting properties, MgB2 bulk samples were prepared using 96% and 99% pure commercial Boron powder as well as 92% commercial Boron powder after ...
Effect of Boron powder purity on superconducting properties of bulk MgB2
(2007-09-01)
In order to study the influence of the amorphous Boron powder on the superconducting properties, MgB2 bulk samples were prepared using 96% and 99% pure commercial Boron powder as well as 92% commercial Boron powder after ...
Disorder induced asymmetric magnetization in Bi2Sr2Ca2Cu3O10
(Elsevier Science BvAmsterdamHolanda, 1997)
Strong pinning and slow flux creep relaxation in Co-doped CaFe2As2 single crystals
(Pergamon-Elsevier Science Ltd, 2020-09)
We report on measurements of critical current densities Jc and flux creep rates S of freestanding Ca(Fe1−xCox)2As2 (x ≈ 0.033) single crystals with Tc ≈ 15.7 K by performing magnetization measurements. The magnetic field ...
Artificial pinning centers in MgB2 superconducting bulks
(IOP Publishing, 2020-02)
The optimization of MgB2 superconducting properties is extremely important for practical application. The introduction of an effective artificial pinning center in this material can enhance its critical current density ...
Thermomagnetic instability effects vs. vortex matter phase transitions in type-II superconductors
(Pergamon-elsevier Science LtdOxfordInglaterra, 2002)
Vortex lattice in Bi2Sr2CaCu2O8+delta well above the first-order phase-transition boundary
(Pergamon-elsevier Science LtdOxfordInglaterra, 2003)
Vortex kinks in superconducting films with periodically modulated thickness
(IOP Publishing, 2013-05)
We report magnetoresistance measurements in Nb films having a periodic thickness modulation. The cylinder shaped thicker regions of the sample, which form a square lattice, act as repulsive centers for the superconducting ...