Ionic conductivity studies in Ba(NO3)2-KNO3 mixed crystals

D.C. Ionic conductivity, DSC, DTA and XRD measurements were made in pellets of pure Ba(NO3)2 ,KNO3 and in different compositions of Ba(NO3)2-KNO3 mixed crystals in the temperature range from room temperature to melting points of their respective systems. The results indicate that the conductivity in the extrinsic region of Ba(NO3)2 increased as the m/o of KNO3 increased up to 91 m/o and then for 95 m/o conductivity falls. The activation energies are calculated for all the compositions and it is found minimum for 91 m/o. XRD, DSC and DTA studies reveal that new phases are formed in mixed systems.

Author(s): S. Shashi Devi 1, B. L. Aruna2, S. Narender Reddy2, A. Sadananda Chary2

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