Author/Authors :
Serov، نويسنده , , T.V. and Zakirov، نويسنده , , R.Ya and Ardashnikova، نويسنده , , E.I. and Dolgikh، نويسنده , , V.A. and El Omari، نويسنده , , M and Sénégas، نويسنده , , J and Réau، نويسنده , , J.M، نويسنده ,
Abstract :
A wide range of fluorite-type oxyfluoride solid solutions is exhibited in the NaF–BiF3–Bi2O3 system. Starting from the entirely fluoride Na0.5(1−z)Bi0.5(1+z)F(2+z) solid solution along the NaF–BiF3 line, the range is extended towards BiOF and the various range compositions can be formulated Na0.5(1−z−h)Bi0.5(1+z+h)F2+z−hOh. The transport properties were studied as a function of the anion excess (z) and the oxygen content (h). Correlations were established between F− ion motions at long range determined by impedance spectroscopy and motions visualized over the NMR scale time.
Keywords :
19F-NMR spectroscopy , Impedance spectroscopy , Oxyfluorides , F? ion conductors
