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Enhanced high-field current carrying capacities and pinning behavior of NbTi-based superconducting alloys (1985)

Wada, H. ; Itoh, K. ; Tachikawa, K. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 57 (1985), S. 4415-4420

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Details

ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: High-field critical current densities Jc and pinning behavior are discussed for Nb-63a/oTi, Nb-61.7a/oTi-3a/oHf, and Nb-64.7a/oTi-7.2a/oTa superconducting alloys. Jc properties for 8–12 T in these alloy superconductors under superfluid helium environments can be even superior to those in Nb3Sn at 4.2 K, when they are heavily cold-worked after final heat treatments. A temperature scaling law of the flux pinning force Fp is found to hold for these alloys in the form of FP=K [Bc2(T)]nbp(1−b)q, where Bc2 is the upper critical field and b≡B/Bc2. The peak reduced field, bm, in the Fp−b curve depends upon how the alloys have been processed. The origins of n, p, and q are discussed in terms of the processing condition.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.334564

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