Title :
Improved strain tolerance in aligned-MgO-whisker reinforced (Bi,Pb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ tapes
Author :
Selvamanickam, V. ; Bamberger, E. ; Martin, P.M. ; Kroeger, D.M.
Author_Institution :
Oak Ridge Nat. Lab., TN, USA
fDate :
6/1/1995 12:00:00 AM
Abstract :
The strain tolerance of monofilamentary BSCCO 2223 tapes has been improved by reinforcing with aligned-MgO whiskers. Tapes reinforced with 15 vol.% whiskers are found to exhibit a superconducting transition temperature of 106 K and a critical current density of 2/spl times/10/sup 4/ A/cm/sup 2/ at 77 K. The magnetic field dependence of current density of the reinforced tapes is found to be identical to that the unreinforced tapes. The reinforced tapes are found to sustain 90% of their initial current density even at a bend strain of 0.6%.<>
Keywords :
bending; bismuth compounds; calcium compounds; critical current density (superconductivity); high-temperature superconductors; lead compounds; magnesium compounds; multifilamentary superconductors; strontium compounds; superconducting transition temperature; whiskers (crystal); (Bi,Pb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/-MgO; (BiPb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/-MgO; 77 K; bend strain; critical current density; magnetic field dependence; strain tolerance; superconducting transition temperature; whisker-reinforced monofilamentary tapes; Bismuth compounds; Capacitive sensors; Current density; Fabrication; Magnetic field induced strain; Morphology; Multifilamentary superconductors; Silver; Strontium; Superconducting transition temperature;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
