The temperature dependences of the mobile charge in lead-borosilicate glass
passivating coatings are investigated. Mechanisms are proposed for the for
mation of the mobile charge in the structure of the glass. It is shown that
the temperature dependence of the mobile charge becomes stronger with incr
easing content of the crystal phase in the interior volume of a passivating
coating. (C) 1999 American Institute of Physics. [S1063-7842(99)02908-6].