Effect of Hydrostatic Pressure on the Electrical Conductivity of Ag2HgI4 and Cu2HgI4

Abstract

The electrical conductivity of the a and ft phases of Ag2HgI4 and Cu2HgI4 has been measured as a function of hydrostatic pressure up to 3xlO8Nm~2 in the temperature range between 283 and 363 K. The activation volumes determined from the data are temperature-dependent. The results are discussed on the basis of the continuum model for the atomic transport process.