Hidden symmetry lowering, nanoscale order–disorder transition and ionic conductivity in Na1/2−xLa1/2−xBa2xZrO3

Local structure model and corresponding Na + conduction network of Na 1/2− x La 1/2− x Ba 2 x ZrO 3 , x = 6/32, obtained from analysis of X-ray spectroscopy and neutron total-scattering data.