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Search Publications by: Stephen E. Russek (Fed)

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Displaying 151 - 170 of 170

Growth and properties of YBa2Cu3O7 thin films on vicinal and polycrystalline MgO substrates

December 21, 1990
Author(s)
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

Transport properties of high-angle grain boundary weak links in YBa2Cu307 thin films

December 3, 1990
Author(s)
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

Growth of YBa2Cu3O7 thin films on MgO: the effect of substrate preparation

October 30, 1990
Author(s)
Stephen E. Russek, Brian H. Moeckly, D. K. Lathrop, R A. Buhrman, Jian Li, J. W. Mayer
We discuss the results of a study on growth by laser ablation of YBa2CuO7 thin films on polycrystalline and annealed vicinal (001) MgO substrates. In both instances the films were found to grow predominantly with c axis normal to the plane of the substrate

Growth of YBa2Cu3O7 thin films on MgO: the effect of substrate preparation

August 13, 1990
Author(s)
Stephen E. Russek
We discuss the results of a study of the effect of a substrate preparation on the microstructure and superconductive properties of YBa2Cu3O7 think films formed by laser ablation on (001) MgO substrates. Thermal annealing of the substrates is found to be

Scaling behavior of YBa 2 Cu 3 O 7 delta thin-film weak links

July 6, 1990
Author(s)
Stephen E. Russek, D. K. Lathrop, D. H. Shin, Brian H. Moeckly, R A. Buhrman, J. Silcox
The superconductive weak link properties of microbridges formed in c-axis normal YBa 2 Cu 3 O 7 δ polycrystalline thin films containing a variable amount of large angle tilt boundaries have been studied. In the low critical current density limit these weak

Free-carrier relaxation dynamics in the normal state on sintered YBa2Cu3O7-y

August 1, 1987
Author(s)
Stephen E. Russek, P. E. Sulewski, T. W. Noh, J. T. McWhirter, A.J. Sievers, R A. Buhrman, C S. Jee, J. E. Crow, R. E. Saloman, G. Myer
The conductivity of YBa2Cu3O7-y in the normal state has been obtained from a measurement of the reflectivity over a wide frequency range. The product of the Drude model parameters Wpt

Measurement of the superconducting energy gap in La-Ba-Cu oxide and La-Sr-Cu oxide

April 1, 1987
Author(s)
Stephen E. Russek, P. E. Sulewski, A.J. Sievers, H. D. Hallen, D. K. Lathrop, R A. Buhrman
We report on far-infared (FIR) reflectivity measurements on sintered pressed poweder samples of La-Ba-Cu oxide and La-Sr-Cu oxide. THe best samples show fairly sharp transitions to zero measurable resistance with a transition midpoint of 28 K for the Ba