High field magneto-transport study of YBa2Cu3O 7:Agx (x = 0.00-0.20)

Poonam Rani, Anand Pal, V. P.S. Awana

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


We report high field (up to 13 T) magneto transport [ρ(T)H] of YBa 2Cu3O7 (YBCO):Agx (x = 0.0, 0.1 and 0.2) composites. The transport properties are significantly improved by Ag doping on the insulating grain boundaries of YBCO. Pure and Ag diffused YBCO superconducting samples are synthesised through solid state reaction route. Both pure and Ag doped YBCO are superconducting at below 90 K. Though, the T c (ρ = 0) of YBCO:Ag samples under applied field of 13 T is around 65 K, the same is 45 K for pure YBCO under same applied field. The upper critical field [Hc2(0)], being estimated from ρ(T)H is around 70 T for pristine sample, and is above 190 T for Ag doped samples. The boarding of the resistive transition under applied magnetic field is comparatively less and nearly single step for Ag doped samples, while the same is clearly two step and relatively much larger for the pristine YBCO. The resistive broadening is explained on the basis of changed inter-granular coupling and thermally activated flux flow (TAFF). The TAFF activation energy (U0) is found to be linear with applied magnetic field for all the samples, but with nearly an order of magnitude less value for the Ag doped samples. Summarily, it is shown that inclusion of Ag significantly improves the superconducting performance of YBCO:Ag composites, in particular under applied field.

Original languageEnglish
Pages (from-to)19-23
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'High field magneto-transport study of YBa2Cu3O 7:Agx (x = 0.00-0.20)'. Together they form a unique fingerprint.

Cite this