Abstract
We report here the structural, electrical and magnetic properties of the annealed NbxZr1-xV2 alloys. We have observed that all the alloys formed mainly in a face centred cubic γ-ZrV2 phase with small amount of β-V phase. The addition of Nb to ZrV2 increases the superconducting critical temperature (TC) from 8.4 K for x = 0 to 9.46 K for x = 0.2. It is also observed that the upper critical field (HC2(0)) in the zero temperature limit increases from about 14T for x = 0 to 26.4 T for x = 0.2. Further increase in x results in the decrease of both TC and HC2(0). Moreover, the martensitic transformation observed in ZrV2 is absent in the Nb substituted alloys.
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