Er. Baranova et al., Electric conductivity and dielectric permittivity of mixed electronic-ionic conductivity compounds (BS)(1-x)(DAsS2)(x) (B = Ge, Pb; D = Ag, Cu), SOL ST ION, 124(3-4), 1999, pp. 255-261
The temperature dependencies of the electrical conductivity and dielectric
permittivity of (BS)(1-x)(DAsS2)(x) (B = Ge, Ph; D = Ag, Cu) were investiga
ted by means of impedance measurements in the frequency range between 10(-1
) and 10(5) Hz and at temperatures between 78 and 500 K. In all chalcogenid
es, ionic conductivity (Ag+ or Cu+) was found. The onset of ionic transport
was found at 115-120 K for AgGeAsS3 and 110-115 K for CuGeAsS3. The comple
x impedance and admittance plots, the electrical properties and the X-ray s
tructure data are given. (C) 1999 Elsevier Science B.V. All rights reserved
.