ABSTRACT: Results on the angular and the field dependence of the critical transport current density as well as on the temperature dependence of the irreversibility fields in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> coated conductors are presented. The films were deposited by pulsed laser deposition on (Y<sub>2</sub>O<sub>3</sub>/YSZ/CeO<sub>2</sub>) triple buffer structures. Either textured magnetic Ni-Fe alloys or recently developed nonmagnetic Ni-Cr-W alloys with good biaxial texture (8.4° and 9.4° for ω and φ scans) were used as substrates. The influence of artificial pinning centers, introduced by fast neutron irradiation, on the irreversible properties of the YBCO films is discussed.
IEEE Transactions on Appiled Superconductivity 07/2003; · 1.04 Impact Factor