STUDY OF DOPING EFFECT ON THE Bi2Sr2Ca2Cu3Oy SUPERCONDUCTOR
HU YU-CAIa, LI REN-CHENGa, LIU JIANb, BAI PEI-GUANGb
a Department of General Studies, Dalian Fisheries College, Dalian 116023, China; b Department of Physics, Inner Mogolia University, Hohhot 010021, China
Abstract We have systematically investigated the doping effect on the Bi2Sr2Ca2Cu3Oy superconductive material. After entering into the crystal lattice, Pb and/or Sb atoms cause not only variations of the temperature condition during the sample preparation process, but also variations of structures and superconductivity. By analyzing the experimental results, we have come to the conclusion that the Pb and/or Sb atoms enter into the Bi-O planes, preferably occupy the sites of Bi ions, regulate the crystal structures and the distribution of oxygen ions in Bi-O planes and nearby lattice sites, thus benefiting the formation of the high-Tc phase and improving the superconductivity.
Received: 13 December 1995
Published: 20 March 1997
PACS:
74.62.Dh
(Effects of crystal defects, doping and substitution)
HU YU-CAI, LI REN-CHENG, LIU JIAN, BAI PEI-GUANG STUDY OF DOPING EFFECT ON THE Bi2Sr2Ca2Cu3Oy SUPERCONDUCTOR 1997 Acta Phys. Sin. (Overseas Edition) 6 205
