TY - JOUR
T1 - Effect of heat treatment on the superconductivity of Pb-doped Bi-2212 system
T2 - Evidence for a possible phase segregation
AU - Xu, Gaojie
AU - Mao, Zhiqiang
AU - Zhang, Yuheng
N1 - Funding Information:
National Education Ministry Foundation for Outstanding Young Teachers, and the President Foundation of Chinese Academia Sinica.
Funding Information:
was supported by the National Outstanding Young Scientists, the
PY - 1998
Y1 - 1998
N2 - Samples of the Bi1.8Pb0.2Sr2CaCu2O 8-δ system with different oxygen concentrations were prepared by annealing the corresponding ceramic sample in various conditions. The normal-state properties were investigated by means of X-ray diffraction (XRD), resistivity, thermoelectric power (TEP), and specific heat. Analyses of these data demonstrate that a possible phase segregation exists in some samples, i.e., the Bi1.8Pb0.2Sr2CaCu2O 8-δ phase with lower carrier concentrations separates into oxygen-rich superconducting domains and oxygen-poor superconducting domains. The anomalous properties of the normal state are discussed in the paper.
AB - Samples of the Bi1.8Pb0.2Sr2CaCu2O 8-δ system with different oxygen concentrations were prepared by annealing the corresponding ceramic sample in various conditions. The normal-state properties were investigated by means of X-ray diffraction (XRD), resistivity, thermoelectric power (TEP), and specific heat. Analyses of these data demonstrate that a possible phase segregation exists in some samples, i.e., the Bi1.8Pb0.2Sr2CaCu2O 8-δ phase with lower carrier concentrations separates into oxygen-rich superconducting domains and oxygen-poor superconducting domains. The anomalous properties of the normal state are discussed in the paper.
UR - http://www.scopus.com/inward/record.url?scp=0032045565&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032045565&partnerID=8YFLogxK
U2 - 10.1023/a:1022631901068
DO - 10.1023/a:1022631901068
M3 - Article
AN - SCOPUS:0032045565
SN - 0896-1107
VL - 11
SP - 259
EP - 263
JO - Journal of Superconductivity
JF - Journal of Superconductivity
IS - 2
ER -