In:
Materials Science Forum, Trans Tech Publications, Ltd., Vol. 546-549 ( 2007-5), p. 2047-2050
Abstract:
Superconducting MgB2 films have been fabricated on sapphire substrate by the method of
hybrid physical-chemical vapor deposition (HPCVD). The film thickness ranges from 75 nm to 3 μm. The investigation on the physical properties, such as the transition temperature, TC, the transition
width, T, and the critical current density, JC, has indicated that the optimum film thickness is about 1 μm. At this thickness, Tc(onset) = 40.3 K and 0Tc = 0.15 K. At T = 5 K without external field, JC has
been estimated as 5.6×105 A/cm2according to the Bean model. The film quality begins to degrade as the thickness exceeds 1 μm. This work has demonstrated that HPCVD is a simple but effective
technique for the application in the production of MgB2 wires.
Type of Medium:
Online Resource
ISSN:
1662-9752
DOI:
10.4028/www.scientific.net/MSF.546-549
DOI:
10.4028/www.scientific.net/MSF.546-549.2047
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2007
detail.hit.zdb_id:
2047372-2
