8 papers · 1 filter
Effect of damage by 2-MeV He ions and annealing on Hc2 in MgB2 thin films
R. Gandikota, R. K. Singh, J. Kim +9
The effect of damage induced by 2-MeV alpha particles, followed by annealing, on the critical temperature (Tc), resistivity, and upper critical field (Hc2), of three MgB2 films mad…
Effect of damage by 2-MeV He ions on the normal and superconducting properties of magnesium diboride
R. Gandikota, R. K. Singh, J. Kim +8
We have studied the effect of damage induced by 2-MeV alpha particles on the critical temperature, Tc, and resistivity of MgB2 thin films. This technique allows defects to be contr…
Electron scattering dependence of dendritic magnetic instability in superconducting MgB2 films
Z. X. Ye, Qiang Li, Y. F. Hu +5
Magnetic instability in both ultra-pure and carbon-doped MgB2 films is investigated by magneto-optical imaging, transport and bulk magnetization measurements. In the carbon-doped M…
Properties of MgB2 thin films with carbon doping
A. V. Pogrebnyakov, X. X. Xi, J. M. Redwing +10
We have studied structural and superconducting properties of MgB2 thin films doped with carbon during the hybrid physical-chemical vapor deposition process. A carbon-containing met…
High-field superconductivity in alloyed MgB2 thin films
V. Braccini, A. Gurevich, J. E. Giencke +24
We investigated the effect of alloying on the upper critical field in 12 films, in which disorder was introduced by growth, carbon doping or He-ion irradiation, fi…
Thickness dependence of the properties of epitaxial MgB2 thin films grown by hybrid physical-chemical vapor deposition
A. V. Pogrebnyakov, J. M. Redwing, J. E. Jones +5
We have studied the effect of deposition rate and layer thickness on the properties of epitaxial MgB2 thin films grown by hybrid physical-chemical vapor deposition on 4H-SiC substr…