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ELECTRICAL CONDUCTIVITY OF BINARY LANTHANUM CUPRATES

Jayant Kher, Manisha Khaladkar, Nandini Iyer

Thermal decomposition of binary mixtures of La (II) oxide and Cu (II) oxalate in the proportion of 1:1 and 1:3.5 was carried out. The end products after heating of the pure Cu (II) oxalate and the binary mixtures were tested for electrical conductivity from room temperature to 1173K.The conductivity was plotted as variation of resistance „eâ�?�? as a function of reciprocal of absolute temperature. All the pellets showed semiconduction with negative temperature coefficient (NTC) of resistance. The calcination products were characterized by XRD and other techniques.