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      https://www.ias.ac.in/article/fulltext/boms/040/06/1121-1125

    • Keywords

       

      Superconductivity; crystal structure; resistivity; high pressure magnetism.

    • Abstract

       

      BiO$_{0.75}$F$_{0.25}$BiS$_2$ crystallizes in tetragonal CeOBiS$_2$ structure (S. G. P4/nmm). We have investigated the effect of pressure on magnetization measurements. Our studies suggest improved superconducting properties in polycrystalline samples of BiO$_{0.75}$F$_{0.25}$BiS$_2$. The Tc in our sample is 5.3 K, at ambient pressure, which is marginal but definite enhancementover $T_c$ reported earlier ($=$5.1 K). The upper critical field Hc2(0) is greater than 3 T, which is higher than earlier report onthis material. As determined from the M–H curve, both H$_{c2}$ and H$_{c1}$ decrease under external pressure $P$ ($0 \leq P \leq 1$ GPa). We observe a decrease in critical current density and transition temperature on applying pressure in BiO$_{0.75}$F$_{0.25}$BiS$_2$.

    • Author Affiliations

       

      ZEBA HAQUE1 GOHIL S THAKUR1 2 GANESAN KALAI SELVAN3 SONACHALAM ARUMUGAM3 L C GUPTA1 4 A K GANGULI1 5

      1. Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India
      2. Present address: Max Planck Institute for Chemical Physics of Solids, Dresden 01189, Germany
      3. Centre for High Pressure Research, School of Physics, Bharathidasan University, Tiruchirappalli 620024, India
      4. Solid State and Nano Research Laboratory, Department of Chemistry, IIT Delhi, New Delhi 110016, India
      5. Institute of Nano Science and Technology, Habitat Centre, Mohali, Punjab 160062, India
    • Dates

       
  • Bulletin of Materials Science | News

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