Search

Your search keyword '"Reeves, J.L."' showing total 4 results
Start Over Author "Reeves, J.L." Topic electronics
4 results on '"Reeves, J.L."'

1. Recent progress in second-generation HTS conductor scale-up at superpower

Author

Selvamanickam, V., Y. Chen, X. Xiong, Y.Y. Xie, Reeves, J.L., Zhang, X., Y. Qiao, Lenseth, K.P., Schmidt, R.M., Rar, A., and Hazelton, D.W.

Subjects
High temperature superconductors -- Electric properties, Electric coils -- Analysis, Thick films -- Electric properties, Business, Electronics, Electronics and electrical industries
Abstract

Various advancements have been made in the development of [YBa.sub.2][Cu.sub.3][O.sub.x] (YBCO) second generation HTS conductor scale-up at superpower. These conductors are found to exhibit very high values of the critical current.

Published
2007

2. Current barriers in Y-Ba-Cu-O coated conductors

Author

Reeves, J.L., Feldmann, D.M., Yang, C.Y., and Larbalestier, D.C.

Subjects
Superconductors -- Research, Thin films -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Current barriers were investigated in Y-Ba-Cu-O coated conductors using the Rolling Assisted Biaxially Textured Substrate method.

Published
2001

3. Effects of overpressure processing on porosity in Ag-sheathed Bi-2212 multifilamentary tapes with various geometries

Author

Reeves, J.L., Hellstrom, E.E., Irizarry, V., and Lehndorff, B.

Subjects
Carbon dioxide -- Research, Porosity -- Research, Superconductors -- Magnetic properties, Business, Electronics, Electronics and electrical industries
Abstract

Bubbling of the Ag-sheath and porosity in the superconducting core can be caused by gases such as CO2 and H2O in lengthy Bi-2212 tapes and wires. H2O can be eliminated and CO2 can be lessened during heating through a pre-processing step that consists of vacuum annealing. Porosity can also be countered through an overpressure heat treatment. The shape and size of pores in multifilaments changes during the processing treatment.

Published
1999

4. Overpressure processing of Ag-sheathed Bi-2212 tapes

Author

Reeves, J.L., Polak, M., Zhang, W., Hellstrom, E.E., Babcock, S.E., Larbalestier, D.C., Inoue, N., and Okada, M.

Subjects
Magnetic tapes -- Research, Superconductors -- Research, Magnetic bubbles -- Research, Business, Electronics, Electronics and electrical industries
Abstract

An overpressure furnace was utilized to determine the extent in which sheath deformation changes with the total pressure in melt-processed silver-sheathed Bi-2212 tapes. Results show that bubbling in coils are eliminated by processing in total pressure of up to 9 atmospheres with constant oxygen partial pressure. Results also reveal that critical current density rises with the increase of total pressure.

Published
1997

Catalog

Books, media, physical & digital resources
See catalog results