ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Superconducting MgB2 films have been fabricated on sapphire substrate by the method ofhybrid 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 transitionwidth, [removed info]T, and the critical current density, JC, has indicated that the optimum film thickness is about 1μm. At this thickness, Tc(onset) = 40.3 K and 0Tc = 0.15 K. At T = 5 K without external field, JC hasbeen estimated as 5.6×105 A/cm2according to the Bean model. The film quality begins to degrade asthe thickness exceeds 1 μm. This work has demonstrated that HPCVD is a simple but effectivetechnique for the application in the production of MgB2 wires
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.2047.pdf
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