Title :
Electrical properties of the glasses in the system (CuI,CuCl)-Cu 2O-MoO3
Author :
Lee, Jae-Hyung ; Lim, Kee-Joe ; Chung, Kyung-Ki ; Kim, Bong-Heup ; Kang, Myung-Sik
Author_Institution :
Dept. of Electr. Eng., Chungbuk Nat. Univ., Seoul, South Korea
Abstract :
Copper-ion conducting glasses were prepared in the system (CuI,CuCl)-Cu2O-MoO3 using a rapid quenching technique. These glasses have high ionic conductivities at room temperature in the range of 10-4 to 10-2 S-m-1, and the conductivities increase with increasing CuI content but decrease with increasing CuCl content. The increase in the conductivity can be explained in terms of a decrease in the activation energy for conduction, and the activation energies for conduction are 0.19-0.39 eV. The electronic conductivities were measured by the Wagner polarization method. The ion transport numbers are 0.995-0.997, and it is shown that the transport number of Cu+ ions in these glasses is practically unity. The dielectric relaxation time is in the range of 3.7×10-4 to 1.2×10-3 s. The activation energies for ion jumping are 0.18-0.36 eV, and these are similar to those for conduction
Keywords :
copper compounds; glass; ionic conduction in solids; molybdenum compounds; superionic conducting materials; 0.18 to 0.39 eV; 0.37 to 1.2 ms; 1E-4 to 1E-2 s/m; Cu ion conducting glasses; CuI-CuCl-Cu2O-MoO3; Wagner polarization method; activation energy for conduction; dielectric relaxation time; ion jumping; ion transport numbers; ionic conductivities; rapid quenching technique; room temperature; transport number; Amorphous materials; Conductivity; Fabrication; Frequency; Glass; Impedance; Powders; Temperature; X-ray diffraction; X-ray scattering;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-87942-568-7
DOI :
10.1109/ICPADM.1991.172188
