Ionic Conduction Properties in PbK2LiNb5O15
Résumé
Ionic conduction is evidenced in PbK2LiNb5O15 single crystal using electric impedance measurements. The phase transition is of first order type and it occurs around 640 K as evidenced by a discontinuity accompanied by a hysteresis of about 10 K, and a global hysteresis up to 720 K. The ionic conduction is attributed to Li+ ion mobility through the structural tunnels by a hoping mechanism.