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Superconductivity in dense Mg11-xMxB2 (M = Zr, Nb, Mo; x = 0.05) materials sintered under pressure

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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 non-magnetic 4d-transition metals (Zr, Nb, Mo) on the superconducting transition temperature (T inc) 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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Authors and Affiliations

  1. High Pressure Laboratory, Materials Science Division, National Aerospace Laboratories, 560 017, Bangalore, India

    S. Kalavathi & C. Divakar

  2. Materials Science Division, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, India

    S. Kalavathi

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  1. S. Kalavathi
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  2. C. Divakar
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Correspondence to C. Divakar.

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Kalavathi, S., Divakar, C. Superconductivity in dense Mg11-xMxB2 (M = Zr, Nb, Mo; x = 0.05) materials sintered under pressure. Bull Mater Sci 28, 249–252 (2005). https://doi.org/10.1007/BF02711256

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  • DOI: https://doi.org/10.1007/BF02711256

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