Electrical conductivity

The phase composition, thermal coefficient of linear expansion and electrical conductivity of Y1-xСaxСг1-yСиуО3-b (х-=0.2 and 0.3; y = 0.05-0.3) are investigated at air in the temperature range 100—1000°C. The thermal coefficient of linear expansion are in range of (9.8—11.5).10-6-4deg-1. The TCLE of some composition close to TCLE of solid electrolyte based on zirconium dioxide. The maximum conductivity is achieved for composition: Y0.8Ca0.2Cr0.9Cu0.1)3-b and Y0.7Ca0,3Cr0.85Cu0.15O3-b at substitution of chromium for copper. 

The temperature dependencies of physical and chemical properties (viscosity, density, electrical conductivity) and the melting temperature of 1M solutions of lithium salts (LiClO₄ and LiBF₄) in the mixture of sulfolane and sulfurous anhydride (∼1M) were studied.

The temperature dependence of conductivity, enthalpy and 7Li spin-lattice relaxation time for Li₅TiN₃ and Li₅SiN₃, have been measured at temperature range of 300 – 850 K. The migration and formation energy of lithium defects have been estimated. Also the conductivity of Li₉TiN₃O₂, Li₉SiN₃O₂ have been measured and the activation energies of the conduction have been obtained.

The phase composition, thermal coefficient of linear expansions (TCLE) and electrical conductivity of (PrXLa1-X)1.85Sr0.15Ni0.9Сu0.1O4 (X=0.0; 0.1; 0.5; 0.9 и 1) (X=0.0; 0.1; 0.5; 0.9 and 1), Pr1-YSrYNiO4 (Y= 0.0; 0.05; 0.1; 0.15; 0.16 and 0.2) and Pr1.84Sr0.16Ni1-ZCuZО4 (Z=0.0; 0.1; 0.5 and 1) are investigated at air in the temperature range 100–1000 °C.The thermal coefficient of linear expansion of (Pr1-XLaX)2-YSrYNi1-ZCuZO4 are in range of (11.6–16.3) 10-6 deg-1 and depends on the size and type of addition.