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

      S Kalavathi C Divakar

      Superconductors Volume 28 Issue 3 June 2005 pp 249-252

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/028/03/0249-0252

    • Keywords

       

      Magnesium diboride; superconductivity; high pressure; resistivity; susceptibility.

    • Abstract

       

      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.

    • Author Affiliations

       

      S Kalavathi1 C Divakar2

      1. Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
      2. High Pressure Laboratory, Materials Science Division, National Aerospace Laboratories, Bangalore 560 017, India

    • Dates

       
      Published
      June 2005
      Manuscript received
      15 April 2004

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