Abstract
Electromotive force (EMF) measurements of oxygen fugacities as a function of stoichiometry have been made on the YBa2Cu3O x , GdBa2Cu3O x , NdBa2Cu3O x , and bismuth cuprate systems in the temperature range ∼400 °C to 750 °C by means of an oxygen titration technique with an yttriastabilized zirconia electrolyte. The shapes of the 400 °C isotherms as a function of oxygen stoichiometry for the Gd and Nd cuprate systems suggest the presence of miscibility gaps at values of x that are higher than those in the YBa2Cu3O x system. For a given oxygen stoichiometry, oxygen partial pressures above GdBa2Cu3Ox and NdBa2Cu3O x the higher (above x=6.5) than that for the promising YBa2-Cu3Ox system.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
