Superconducting MgB{sub 2} films via precursor postprocessing approach
Abstract
Superconducting MgB{sub 2} films with T{sub c}=38.6K were prepared using a precursor-deposition, ex situ postprocessing approach. Precursor films of boron, {similar_to}0.5 {mu}m thick, were deposited onto Al{sub 2}O{sub 3} (102) substrates by electron-beam evaporation; a postanneal at 890{degree}C in the presence of bulk MgB{sub 2} and Mg metal produced highly crystalline MgB{sub 2} films. X-ray diffraction indicated that the films exhibit some degree of c-axis alignment, but are randomly oriented in plane. Transport current measurements of the superconducting properties show high values of the critical current density and yield an irreversibility line that exceeds that determined by magnetic measurements on bulk polycrystalline materials. {copyright} 2001 American Institute of Physics.
- Authors:
-
- and others
- Publication Date:
- Sponsoring Org.:
- (US)
- OSTI Identifier:
- 40203188
- Resource Type:
- Journal Article
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 78; Journal Issue: 23; Other Information: DOI: 10.1063/1.1377323; Othernumber: APPLAB000078000023003669000001; 015123APL; PBD: 4 Jun 2001; Journal ID: ISSN 0003-6951
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALIGNMENT; BORON; CRITICAL CURRENT; EVAPORATION; PHYSICS; PRECURSOR; SUBSTRATES; TRANSPORT; X-RAY DIFFRACTION
Citation Formats
Paranthaman, M, Cantoni, C, Zhai, H Y, Christen, H M, Aytug, T, Sathyamurthy, S, Specht, E D, Thompson, J R, Lowndes, D H, and Kerchner, H R. Superconducting MgB{sub 2} films via precursor postprocessing approach. United States: N. p., 2001.
Web. doi:10.1063/1.1377323.
Paranthaman, M, Cantoni, C, Zhai, H Y, Christen, H M, Aytug, T, Sathyamurthy, S, Specht, E D, Thompson, J R, Lowndes, D H, & Kerchner, H R. Superconducting MgB{sub 2} films via precursor postprocessing approach. United States. https://doi.org/10.1063/1.1377323
Paranthaman, M, Cantoni, C, Zhai, H Y, Christen, H M, Aytug, T, Sathyamurthy, S, Specht, E D, Thompson, J R, Lowndes, D H, and Kerchner, H R. 2001.
"Superconducting MgB{sub 2} films via precursor postprocessing approach". United States. https://doi.org/10.1063/1.1377323.
@article{osti_40203188,
title = {Superconducting MgB{sub 2} films via precursor postprocessing approach},
author = {Paranthaman, M and Cantoni, C and Zhai, H Y and Christen, H M and Aytug, T and Sathyamurthy, S and Specht, E D and Thompson, J R and Lowndes, D H and Kerchner, H R},
abstractNote = {Superconducting MgB{sub 2} films with T{sub c}=38.6K were prepared using a precursor-deposition, ex situ postprocessing approach. Precursor films of boron, {similar_to}0.5 {mu}m thick, were deposited onto Al{sub 2}O{sub 3} (102) substrates by electron-beam evaporation; a postanneal at 890{degree}C in the presence of bulk MgB{sub 2} and Mg metal produced highly crystalline MgB{sub 2} films. X-ray diffraction indicated that the films exhibit some degree of c-axis alignment, but are randomly oriented in plane. Transport current measurements of the superconducting properties show high values of the critical current density and yield an irreversibility line that exceeds that determined by magnetic measurements on bulk polycrystalline materials. {copyright} 2001 American Institute of Physics.},
doi = {10.1063/1.1377323},
url = {https://www.osti.gov/biblio/40203188},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 23,
volume = 78,
place = {United States},
year = {Mon Jun 04 00:00:00 EDT 2001},
month = {Mon Jun 04 00:00:00 EDT 2001}
}