Abstract
The electrical conductivities of MgS and SrS disks carefully prepared to avoid any contamination have been measured at temperatures from 973 to 1223 K and in the PS2 range from 10−10 to 104 Pa. Because the conductivities were independent of sulfur pressure in the low sulfur pressure range, it was concluded that MgS and SrS may be ionic conductors. The specific conductivities can be expressed as follow;
(This article is not displayable. Please see full text pdf.)
\
oindentand the apparent activation energies for the conduction of MgS and SrS are 218 kJ/mol and 180 kJ/mol, respectively.
However, in the high sulfur pressure range, the specific conductivities of both sulfides increase with an increase in sulfur pressure, suggesting the positive hole conduction.
