Superconductivity in dense Mg1â€�?�ð�?�¥M𝑥B2 (M = Zr, Nb, Mo;ð‘�? = 0.05) materials sintered under pressure

Bulletin of materials science

C Divakar¹  S Kalavathi² 

[1] High Pressure Laboratory, Materials Science Division, National Aerospace Laboratories, Bangalore 560 017, India$$High Pressure Laboratory, Materials Science Division, National Aerospace Laboratories, Bangalore 560 017, IndiaHigh Pressure Laboratory, Materials Science Division, National Aerospace Laboratories, Bangalore 560 017, India$$;Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India$$Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, IndiaMaterials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India$$

关键词: Magnesium diboride;    superconductivity;    high pressure;    resistivity;    susceptibility.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

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 4ð‘�??-transition metals (Zr, Nb, Mo) on the superconducting transition temperature (ð‘�??_c) 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.

【 授权许可】

Unknown