Critical current densities in Nb3Ge between 14 and 21 K
- 1 March 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 11 (2) , 405-407
- https://doi.org/10.1109/tmag.1975.1058742
Abstract
Self field critical current densities of thick Nb3Ge films have been measured in the liquid hydrogen temperature range 13.8 - 21 K. Bulk critical current densities Jcabove 1.6 × 106A/cm2were observed at 14 K falling linearly at higher temperatures. The behavior extrapolated to zero critical current gave a critical temperature Tc∼ 19.2 K which is ∼1.5 K lower than the onset Tcdetermined from the a.c. magnetic susceptibility. The samples were long sections of copper tubes, which had been coated on the inside with Nb3Ge by a chemical vapor deposition process. Jcfor various high Tcmaterials are compared including calculations of adiabatic stability. Nb3Ge holds promise for a dc superconducting power transmission line operating near 14 K.Keywords
This publication has 3 references indexed in Scilit:
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- Longitudinal and transverse critical currents of chemically deposited Nb3Sn in the temperature range 14.5–17.5°KJournal of Applied Physics, 1973
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