Diffusion mediated growth of superconducting Nb-Ti composite films by high temperature annealing
Deepika Sawle,
V P S Awana,
Sangeeta Sahoo
Abstract:The fabrication of superconducting Nb-Ti alloy by high temperature annealing of Nb/Ti bilayer thin films is reported here. During the annealing process, Nb and Ti diffuse into each other and Nb-Ti composite film formation occurs at the interface of the bilayer. Two types of substrates, namely, SiO2/Si and Si3N4/Si are used to grow the bilayers of Nb/Ti by using dc magnetron sputtering. Annealing at temperature about 820C leads the substrates to take part into the diffusion process. The alloying of Nb-Ti and t… Show more
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