Growth and dc conductivity studies of tripotassium sodium dichromate single crystal
DC electrical conductivity studies were carried out along the three crystallographic axes for tripotassium sodium dichromate (K3Na(CrO4) 2 or KNCr). Earlier studies of phase transition in this crystal show successive phase transitions at 239 K and 853 K. In this paper we report the dc electrical conductivity measurements in the temperature region 303–430 K along the crystallographic axes. An anomaly in conductivity was obtained around 326 K along both the axes. This may be attributed as due to a newly observed phase transition in the crystal. DSC taken for the sample also shows exothermic peak supporting the occurrence of newly observed phase transition.
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