The reasons for the appearance of peaks in the temperature dependences
of the electrical losses in the kilohertz range for structures of the
type (metal-insulator-semiconductor-insulator-metal) were studied. It
was shown that the peaks are due to the change in the conductivity of
compensated semiconductors and that their temperature and frequency p
ositions makes it possible to determine the electrical conductivity of
a high-resistivity material. (C) 1996 American Institute of Physics.