Digitale Medien
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
53 (1988), S. 2235-2237
ISSN:
1077-3118
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Superconductive LaBa2Cu3O7−y materials which achieve zero resistivity at temperatures above 90 K have been synthesized using the appropriate sintering and annealing conditions. We find it necessary to sinter our samples in an inert atmosphere and to cool our samples from a high temperature to below the tetragonal to orthorhombic transition temperature in an inert atmosphere before the sample is further exposed to oxygen. We conclude that in order to produce amounts of orthorhombic LaBa2Cu3O7−y material sufficient to achieve zero resistivity at temperatures of 90 K or above, it is necessary to prevent the material from incorporating too much oxygen while it is at temperatures in excess of its tetragonal to orthorhombic transition temperature.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.100512
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