Abstract
The electrical conductivities of flat crystal plates of KBr and KCl were measured over a temperature range of from 25°C to 600°C, at stresses of from 0.05 to 0.90 kv/cm. Ohm's law was found to hold, when cold conductivities were measured after preliminary heating. Current-time data indicated an exponential decay of current with time at the lower temperatures, and a current constant with time at the higher temperatures. An exponential relation between conductivity and temperature was found to hold for both KBr and KCl, but in the latter case an abrupt change in the slope of the curve was found to take place at a temperature between 200°C and 250°C.
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