skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
; ; ; ; ; ; ; ; ;  [1]
  1. 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}
}