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    • C Divakar

      Articles written in Bulletin of Materials Science

    • Volume 28 Issue 3 June 2005 pp 249-252 Superconductors

      Superconductivity in dense Mg1–𝑥M𝑥B2 (M = Zr, Nb, Mo;𝑥 = 0.05) materials sintered under pressure

      S Kalavathi C Divakar

      More Details Abstract Fulltext PDF

      Dense compacts of superconducting MgB2 material have been produced by sintering under 3 GPa pressure and 900°C using a cubic anvil apparatus. The starting material was produced by the powder in tube (PIT) method at low pressure and in argon atmosphere. The effect of substitution of Mg sites with nonmagnetic 4𝑑-transition metals (Zr, Nb, Mo) on the superconducting transition temperature (𝑇c) has been studied by resistivity and susceptibility measurements. The results indicate that there is a small gradual reduction in the transition temperature as we move from Zr to Mo.

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