Jf. Marucco et al., SYNTHESIS, THERMODYNAMICS AND ELECTRICAL-PROPERTIES OF NONSTOICHIOMETRIC BA2CUO3+DELTA, Journal of alloys and compounds, 262, 1997, pp. 498-501
The oxide Ba2CuO3+delta was synthesized and a maximum oxygen content o
f 3.5 was found corresponding to an orthorhombic structure. The depart
ure from stoichiometry was measured at various temperatures and the ex
perimental results were interpreted in terms of two domains of oxygen
vacancies. The electrical conductivity was measured in the same condit
ions and two behaviours were found, in good agreement with the departu
re from stoichiometry. (C) 1997 Elsevier Science S.A.