Determination of the ion-conduction properties of Na₃OBr and its dominant defect species

Abstract

Na3OBr is fabricated using purified Na2O. The dominant lattice defects are the site mixing of Br− and O2− rather than the Schottky pairs. Conductivity of Na3OBr increases by doping excess Br− ions while Ca2+ doping results in the deterioration of the conductivity.