Solid State Ionics, Vol.106, No.1-2, 143-153, 1998
Microstructure and ionic transport in sintered Na beta-aluminogallates : A radio- and microwave frequency dielectric study
Sintered samples of beta-aluminogallates, Na1+x(Al0.5Ga0.5)(11) O17 + x/2, have been synthesized and studied by high-frequency conductivity and dielectric spectroscopy in the broad frequency range 10(3) to 10(10) Hz. The dielectric measurements have been performed as a function of temperature (290 to 420 K), porosity (18 to 50%) and sodium content y=1+x (1