Open AccessSTUDY ON THE HIGH-TEMPERATURE RESISTIVITY OF Bi1.6Pb0.4Sr2Ca2Cu3Ox
Author(s) -
张留碗,
陈廷国
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1906
Subject(s) - electrical resistivity and conductivity , materials science , annealing (glass) , oxygen , microstructure , metal , high temperature superconductivity , superconductivity , ion , condensed matter physics , analytical chemistry (journal) , composite material , metallurgy , chemistry , physics , organic chemistry , chromatography , electrical engineering , engineering
The effects of heat treatments on the resistivity of BPSCCO-2223 superconductor were studied. The anomalous behavior in high-temperature resistivity was observed. It was shown that upon annealing in N2 at high temperatures, the oxygen escaped not only from Bi-O layer but also from Cu-O layer accompanied with the movement of metal ions. The change in oxygen content and the redistri-bution of oxygen and metal atoms diversified the microstructure of BPSCCO-2223 phase.