Open AccessPreparation and Physical Properties of Tl0.65Hg0.35Ba2Can-1CunO2n+3-/delta(n = 1, 2, 3) Superconductors
Author(s) -
Kareem A. Jasim
Publication year - 2013
Publication title -
applied physics research
Language(s) - English
Resource type - Journals
eISSN - 1916-9647
pISSN - 1916-9639
DOI - 10.5539/apr.v5n4p80
Subject(s) - electrical resistivity and conductivity , superconductivity , cuprate , materials science , transition temperature , lattice constant , condensed matter physics , superconducting transition temperature , high temperature superconductivity , lattice (music) , physics , diffraction , quantum mechanics , acoustics , optics
Multilayered cuprates of Tl0.65Hg0.35Ba2Can-1CunO2n+3-/delta, with n = 1–3 have been synthesized by using solid state reaction method in order to investigate the variation of transition temperature Tc. The temperature dependence of resistivity showed that the Tc depends on n. The c-lattice constants of the observed phases obey, the c-axis rule of c = 3.117n+6.5467 for Tl-O layer structures. With an increase in Cu-O layers, the superconducting transition temperature is determined by electrical resistivity-temperature dependency and rises reaching a maximum value of 121 K at n = 3