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Author Mohanta, Annapurna ♦ Behera, Dhrubananda ♦ Panigrahi, Simanchalo ♦ Mishra, Naresh Chandra
Source IACS Kolkata
Content type Text
Publisher Indian J. Phys.
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics
Subject Keyword Composite ♦ Superconductivity ♦ Percolation
Abstract Ferroelectrics and high temperature superconductors are two promising materials for future electronic devices. Both being perovskite ceramic structures with similar crystal chemistry a set of samples were prepared from the composite of (1-x)YBa2Cu307–δ – (x)BaTiO3 (YBCO/BT). These samples were investigated with temperature dependent resistance, FTIR, X-ray diffraction and SEM-EDX analysis. It has been found that the critical exponent in the Tc0 (R = 0) region is in agreement with the percolation theory. A long-range superconducting order results from thermally assisted percolation process through weak-links between the grains. The connectivity in the coherent transition region can be explained by a power law.
Education Level UG and PG
Learning Resource Type Article
Journal Indian J Phys
Volume Number 83
Issue Number 4
Page Count 9
Starting Page 455
Ending Page 463