Correlation between the activation enthalpy and Kohlrausch exponent for ionic conductivity in alkali aluminogermanate glasses

Journal Article · Tue Mar 14 23:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.6169· OSTI ID:6334833

Ngai, K L; Mundy, J N; Jain, H; Kanert, O; Balzer-Jollenbeck, G

The temperature and frequency dependence of electrical conductivity (sigma/sub dc/) and the electrical modulus of sodium, rubidium, and Na-Rb mixed alkali germanate and aluminogermanate glasses have been determined for varying alkali concentrations, and (Al)/(Ge) and (Na)/(Rb) ratios. In a few glasses the spin-lattice relaxation times T/sub 1/ for /sup 23/Na have also been determined above room temperature. The frequency dependence of modulus is well fitted by the Kohlrausch (''stretched exponential'' decay) function with exponent ..beta..equivalent1-n (0

• Research Organization: Naval Research Laboratory, Washington, D.C. 20375-5000
• OSTI ID: 6334833
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:9; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENTHALPY
FREQUENCY DEPENDENCE
GERMANATES
GERMANIUM COMPOUNDS
GLASS
IONIC CONDUCTIVITY
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES