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Multifilamentary Nb-Nb3 (Al,Ge) superconductors were prepared using an infiltration process. The critical temperature of sample diffusion reacted in the 1250–1700 °C temperature interval ranged from 16 to 19.0 °K. A critical current density of 105 A/cm2 at 50 kOe was observed for samples reacted at lower temperatures.
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Pickus et al. (1976) studied this question.
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