ELECTROPHYSICAL PROPERTIES OF OXIDE INTERLANTHANIDES AND SOLID SOLUTIONS BASED ON THEM

摘要

The electrophysical properties and nature of oxide interlanthanides LaYO_3, LaYbO_3, LaErO_3, NdLuO_3, LaGdO_3, and GdLuO_3, pure and doped by calcium and hafnium oxides with close ionic radii, are investigated within a temperature interval from 900 to 1600 deg C and oxygen partial pressure from 2 X 10~4 to 1 X 10~(-10) Pa. It is demonstrated that the electric conductivity of the materials considered is determined by nonstoichiometric disordering. The results obtained can be used for synthesis of new types of thermoresistors, oxygen sensors, and other ceramic sensors, as well as various dielectric materials.