The Electrical Conductivity and Isothermal Hall Effect in Cuprous Oxide

The electrical conductivity of cuprous oxide is studied from room temperature to 700^∘{}C. It is observed that whereas the conductivity may be represented by the formula σ=Aₑ^_^-εkT at the higher temperatures, below 300^∘{}C the exponential law is not obeyed. The maxima and minima of the conductivity curves observed in the latter region are presumed to result from a combination of a saturation of clusters and a rapid decrease of mobility with temperature. Hall effect measurements up to 450^∘{}C show that the number of current carriers does not obey the exponential law of temperature dependence. An anomaly in the mobility is observed around 150^∘{}C where the mobility changes from a T^-5 to a T^-7 dependence.