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Your search keyword '"Hussey, B.W."' showing total 23 results
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23 results on '"Hussey, B.W."'

1. Novel solid-phase epitaxial growth of YBa2Cu3O7-delta films from precursor oxides

Author

Hussey, B.W., Gupta, A., and Olsson, E.

Subjects
Yttrium barium copper oxides -- Research, Thin films -- Analysis, Diffusion -- Analysis, Physics
Abstract

The precursor oxide phases of pulsed laser deposited-YBCO films grown on (100)-oriented SrTiO3 substrates intermix to form a novel epitaxial solid-phase film. Epitaxial nucleation of the YBCO layers by the substrate interface is essential for solid-phase film formation. In situ resistance observations of the YBCO growth phase showed that interdiffusion occurs very quickly and immediately after production of ablated products from the initial precursor oxide layer.

Published
1994

2. Synthesis of YBa2Cu3O7-gamma films from separate oxide targets

Author

Hussey, B.W. and Gupta, A.

Subjects
Ablation (Vaporization technology) -- Research, Thin films -- Research, Lasers -- Usage, Yttrium barium copper oxides -- Research, Physics
Abstract

Laser ablation of separate oxide targets YBa2Ox and CuO as well as Y2Cu2O5 and BaCuO2 produced YBa2Cu3O7-gamma (YBCO). It was shown that separate high quality epitaxial YBCO films can be obtained independent from the laser pulse delay settings. Other experiments are also in the process of using reflection high energy electron diffraction and resistance measurements during the early stages of film growth.

Published
1992

3. Finite-size effects on the vortex-glass transition in thin YBa2Cu3O7-d films

Author

Woeltgens, P.J.M., Dekker, C., Koch, R.H., Hussey, B.W., and Gupta, A.

Subjects
current density, film thickness, vortex glass, high magnetic fields, scaling, vortex glass phase transition, magnetic field, current voltage characteristics, FILMS, finite size effects, vortex glass transition, SFS, size effect, vortex glass phase, vortex excitations, glass transition, nonlinear current voltage characteristics, three dimensional, yttrium barium cuprate vortex glass transition, magnetic flux
Published
1995

4. 2D-3D crossover effects on the vortex-glass phase transition in thin YBa2Cu3 O7-delta films

Author

Woeltgens, P.J.M., Dekker, C., Koch, R.H., Hussey, B.W., and Gupta, A.

Subjects
film thickness, flux line lattice, superconducting thin films, vortex glass, high magnetic fields, low currents, dimensionality effect, magnetic field, YBa sub 2 Cu sub 3 O sub 7 delta films, high temperature superconductors, 2D 3D crossover effects, A7475 Superconducting films, 3D vortex glass, high temperature superconductor, scaling, vortex glass phase transition, current voltage characteristics, scaling analysis, INSPEC, thick films, critical scaling behavior, vortex glass phase, yttrium compounds, vortex excitations, A7460G Flux pinning, flux motion, fluxon defect interactions, nonlinear current voltage characteristics, barium compounds, A7470V Perovskite phase superconductors, three dimensional, 16 to 400 AA
Published
1994

5. Absence of a finite-temperature vortex-glass phase transition in two-dimensional YBa 2Cu 3O 7-delta films

Author

Dekker, C., Woeltgens, P.J.M., Koch, R.H., Hussey, B.W., and Gupta, A.

Subjects
current density, flux line lattice, superconducting thin films, vortex glass, A7460J Critical currents in type II superconductors, YBa sub 2 Cu sub 3 O sub 7 delta films, high temperature superconductivity, high magnetic field state, high temperature superconductors, A7475 Superconducting films, critical current density superconductivity, critical scaling analysis, two dimensional, temperature dependence, 3D vortex glass, scaling, vortex glass phase transition, nonlinearity, current voltage characteristics, power law temperature dependence, scaling analysis, INSPEC, vortex glass phase, yttrium compounds, A7460G Flux pinning, flux motion, fluxon defect interactions, nonlinear current voltage characteristics, 2D vortex glass, barium compounds, A7470V Perovskite phase superconductors
Published
1992

16. Layer-by-Layer Growth of Thin Films of the Infinite-Layer Compounds SrCuO2and CaCuO2

Author

Gupta, A., Hussey, B.W., Shaw, T.M., Guloy, A.M., Chern, M.Y., Saraf, R.F., and Scott, B.A.

Abstract

Epitaxial thin films of the infinite-layer compounds SrCuO2and CaCuO2have been grown in a layer-by-layer mode on (100) SrTiO3substrates by pulsed laser deposition with in situmonitoring using reflection high-energy electron diffraction (RHEED). While the pseudomorphic growth of SrCuO2thin films on lattice-matched SrTiO3substrates has been reported previously, we have also successfully synthesized for the first time high quality thin films of the other end-member, CaCuO2, which is an important structural component of a number of cuprate superconductors. The stabilization of the infinite-layer CaCuO2has been achieved by using an epitaxial layer of the infinite-layer SrCuO2film as a chemical template for the nucleation and growth of this highly metastable phase. The oxygen concentration used during deposition and subsequent cooldown of the films has been observed to result in subtle structural modifications in the infinite-layer compounds, with substantial influence on their transport properties.

Published
1994
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17. Laser deposition of YBa[sub 2]Cu[sub 3]O[sub 7-delta] films using a pulsed oxygen source.

Author

Gupta, A. and Hussey, B.W.

Subjects
*THIN films, *PULSED laser deposition
Abstract

Discusses the growth of YBCO thin films by pulsed laser deposition in a low-pressure background using a pulsed, high intensity jet of oxygen. Provision of an oxygen source by a pulsed molecular beam valve; Use of in situ analysis techniques such as reflection-high energy electron diffraction, during laser deposition.

Published
1991
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18. Direct imaging of the fragments produced during excimer laser ablation of....

Author

Gupta, A., Braren, B., Casey, K.G., Hussey, B.W., and Kelly, Roger

Subjects
IMAGING systems, SHOCK waves, LASER ablation
Abstract

Examines the use of ultrafast photography to study the temporal evolution of the fragments and the shock wave formed during KrF laser ablation of YBCO target. Ejection of fragments from the target; Agreement of the shock wave with a planar model; Observation of gas-dynamic effects.

Published
1991
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19. Magnete-optical characterization of YBa[sub 2]Cu[sub 3]O[sub 7] film uniformity.

Author

Raider, S.I., Gupta, A., Hussey, B.W., Oh, B., Batalla, E., Zwartz, E.G., and Wright, L.S.

Subjects
MAGNETIC flux, SEMICONDUCTOR films
Abstract

Examines the macroscopic variations in magnetic flux and film uniformity in epitaxial YBa[sub2]Cu[sub3]O[sub7] superconducting films deposited on crystalline substrates. Enhancement of flux penetration into YBa[sub2]Cu[sub3]O[sub7] films in an externally applied magnetic field at crystalline substrate defect sites; Current-voltage measurements.

Published
1991
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