Author:
Da Laz C. S.,A. dos Santos A. D.,R. Izario D.
Abstract
Electrical resistance as a function of temperature, R(T), and X-ray powder diffractometry (XRD) patterns are reported for polycrystalline samples of the BaPb1-xBixO3 system. R(T) measurements conducted with single phase samples show metal-like behavior for BaPbO3, superconductivity in the 0.005 < x < 0.30 range, and a insulating regime for x > 0.30. A careful analysis of the onset of the critical temperature (TC) revels dependence on sample composition for 0.005 < x < 0.30. We argue that the composition-dependence of TC is related to the superconducting volume fraction which ultimately leads to connected or disconnected superconducting clusters, similar to granular superconductors.
Publisher
Iraqi Forum for Intellectuals and Academics
Reference24 articles.
1. -[1] A. Mostafa, H. Ibrahim, Mohammed Salah, M. A. Abdel-Rahamn, M. Abdel-Rahman, Emad A. Badawi, Exp. Theo. NANOTECHNOLOGY 2 (2018) 75
2. -[2] B. Batlogg, Physica B 126 (1984) 275
3. -[3] T. Hikata, Y. Kasatani, R. Yoshizaki, H. Uwe, T. Sakudo and T. Suzuki, Phys. Rev. B
4. (1987) 5578
5. -[4] R. J. Cava, B. Batlogg, J. J. Krajewski, R. Farrow, l. W. Rupp Jr., A. E. White, K. Short, W. F. Peck and T. Kometani, Nature 332 (1988) 814