1 Risø National Laboratory for Sustainable Energy, Technical University of Denmark2 unknown3 Department of Energy Conversion and Storage, Technical University of Denmark4 Department of Wind Energy, Technical University of Denmark5 Department of Physics, Technical University of Denmark
MgB2 samples doped with TiO2 nanoparticles were prepared and the effect of TiO2 addition on the superconducting transition temperature (T-c), irreversibility field (H-irr) and critical current density (J(c)) were investigated. It is found that the hexagonal lattice parameters a and c decrease with TiO2 doping. Tc decreases gradually from 38.2 to 37.8 K as the TiO2 content increases from 0 to 15 wt%. The H-irr increases at 20 K from 4.3 to 4.9 T as the TiO2 content increases from 0 to 10 wt%, and at the same temperature J(c) increases from 450 to 4250 A/cm(2) at 4.2 T. (C) 2004 Published by Elsevier B.V.
Physica C: Superconductivity and Its Applications, 2004, Vol 406, Issue 1-2, p. 95-99