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Synthesis of Nb/sub 3/Ga and Nb/sub 3/Al superconducting composites by laser beam irradiation

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.96480· OSTI ID:6244445

Nb/sub 3/Ga and Nb/sub 3/Al superconductors were successfully fabricated by continuous CO/sub 2/ laser beam irradiation of a moving material. Transition temperatures after the irradiation are 17.0 and 16.5 K, respectively. These temperatures are increased by approx.2 K by the subsequent annealings. Critical current density J/sub c/ (for the reacted area) of 3 x 10/sup 4/ A/cm/sup 2/ at 15 T and 4.2 K is obtained for Nb/sub 3/Al tape with small magnetic field dependence up to 23 T. The results indicate that the continuous laser beam irradiation is a very attractive method for fabricating advanced superconductors, such as Nb/sub 3/Ga, Nb/sub 3/Al, Nb/sub 3/(Al,Ge), etc.

Research Organization:
National Research Institute for Metals, 1-2-1, Sengen, Sakura, Niihari-gun, Ibaraki-ken 305, Japan
OSTI ID:
6244445
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 48:9; ISSN APPLA
Country of Publication:
United States
Language:
English