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Neutron induced disorder in superconducting A-15 compounds

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4 Author(s)
Sweedler, A.R. ; Brookhaven National Laboratory, Upton, New York ; Cox, D. ; Schweitzer, D.G. ; Webb, G.W.

The effect of high energy neutron (E>1 MeV) irradiation at 60°C on the superconducting critical temperature, Tc, the upper critical field, Hc2, the lattice parameter, ao, and the degree of Long Range Order has been measured for Nb and V based A-IS superconducting compounds. Large reductions in Tc, and Hc2are observed for fluences up to 5.0 × 1019n/cm2. For Nb3Al aoincreases and the degree of Long Range Order is significantly reduced as Tcis depressed. The results are discussed in terms of atomic ordering in the A-15 structure.

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Magnetics, IEEE Transactions on  (Volume:11 ,  Issue: 2 )