| Popis: |
The characterization, dc and ac ionic conductivity studies of 0.19 Ba(NO 3 ) 2 - 0.81 KNO 3 : CeO 2 nano dispersed sysyem, σ x , has been measured from room temperature to nearly their melting points. At any temperature the maximum enhancement in conductivity occurs at 10.8m/o 0.19 Ba(NO 3 ) 2 - 0.81 KNO 3 :CeO 2 . The activation energies are calculated in the extrinsic region of temperature. XRD and DSC indicate that no new structure is formed in the dispersoid material and the melting point is not affected. The gradual increase in conductivity ( 0.19 Ba(NO 3 ) 2 - 0.81 KNO 3 :CeO 2 ) is due to the presence of nano CeO 2 , which interacts with cations, thereby reducing ion pairing and increases the number of charge carriers. The incorporation of nano dispersoid particles not only reduces the interfacial resistance but also provides better enhancement in conductivity. |
