High current-carrying capability in c-axis-oriented superconducting MgB2 thin films.
Phys Rev Lett
; 87(8): 087002, 2001 Aug 20.
Article
em En
| MEDLINE
| ID: mdl-11497972
ABSTRACT
In high-quality c-axis-oriented MgB2 thin films, we observed high critical current densities ( J(c)) of approximately 16 MA/cm(2) at 15 K under self-fields comparable to those of cuprate high-temperature superconductors. The extrapolated value of J(c) at 5 K was estimated to be approximately 40 MA/cm(2). For a magnetic field of 5 T, a J(c) of approximately 0.1 MA/cm(2) was detected at 15 K, suggesting that this compound would be a very promising candidate for practical applications at high temperature and lower power consumption. The vortex-glass phase is considered to be a possible explanation for the observed high current-carrying capability.
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MEDLINE
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article