TITLE

Synthesis of LaBa2Cu3O7-y through tetragonal to orthorhombic phase transition at high oxygen deficiency

AUTHOR(S)
Brass, Stephen G.; Ghandehari, Mohammad H.
PUB. DATE
November 1988
SOURCE
Applied Physics Letters;11/28/1988, Vol. 53 Issue 22, p2235
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
9828921

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics