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Stephen E. Russek, Brian H. Moeckly, D. K. Lathrop, M. G. Norton, C, B. Carter
We have investigated the nature of the in-situ growth of c-axis normal TBa2Cu3O7 thin films on non-lattice-matched, vicinal, and polycrystalline MgO substrates, and on buffer layers of MgO. We find that the preparation of the MgO surface determines the
Ronald H. Ono, Loren F. Goodrich, James A. Beall, Marcus Johansson, Carl D. Reintsema
We have measured the transport critical current density (Jc) in epitaxial quality films of YBa2Cu307-delta some of which were covered by thin (10 nm) Ag films. The films, both with and without Ag, had J, values greater than IO^6 A/cm^2 in liquid nitrogen
Stephen E. Russek, Brian H. Moeckly, D. K. Lathrop, R A. Buhrman, M. G. Norton, C, B. Carter
We discuss the results of a study on the growth by laser ablation of YBa2Cu3O7 thin films on polycrystalline and annealed vicinal (001) MgO substrates. In both instances the filss were found to grow predominantly with the c axis normal the the plane of the
Stephen E. Russek, D. K. Lathrop, Brian H. Moeckly, R A. Buhrman
By patterning ~ l-um-wide microbridges in laser ablated YBa2Cu3O7, films containing high-angle tilt boundaries, weak links have been isolated with critical currents low enough to avoid self-screening effects. The current-voltage characteristics of these