ISSN:
0392-6737
Keywords:
Superconducting perovskites and related structures
;
Treatment of materials and its effects on microstructure and properties
;
Conductivity phenomena in semiconductors and insulators
;
Conference proceedings
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Summary The transformation of the 2223 (n=3) phase in the 2201 (n=1) phase by heating the sample in Ar atmosphere was studied. The subsequent cycling of the sample temperature and the oxygen enrichment of the gas phase convert the 2201 (n=1) phase in the 2223 (n=3) phase in the presence of the 2212 (n=2) and Ca2PbO4 compound. Thein situ resistivity measurements,T c values and XRD carried out on the sample confirm these phase changes. The experiment indicates that this process is oxygen dependent at low oxygen partial pressure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02462163
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