Authors:Ewa Drożdż-Cieśla, Jan Wyrwa, Jolanta Broś and Mieczysław Rękas
electricalproperties, of the cermet materials. In the literature, various methods have been described: impregnation [ 10 ], citrate–nitrate combustion synthesis [ 11 ], precipitation with buffer solution of NH 3(aq) and NH 4 HCO 3 [ 12 ], co
The influence of -radiation, upon elongation, resistance to tearing, module of elasticity, as well as upon the following electrical properties has been studied: , tg, and breakdown resistance, for various sorts of rubber.
Authors:Csilla Farkas, Antti Ristolainen, Tibor Tóth, Sándor Koós and Péter László
Ristolainen A. — Tóth T. — Farkas Cs.: 2005. Measurement of soil electricalproperties for the characterization of the conditions of food chain element transport in soils. Part I. Instrumental comparison. Cereal Research Communications vol. 34 no. 1 159–162pp
Authors:Viorel Chihaia, Karl Sohlberg, M. Scurtu, C. Hornoiu, M. Caldararu, C. Munteanu, G. Postole, N. I. Ionescu, T. Yuzhakova and A. Redey
widely used in flat panel displays, transparent conducting electrodes, solar cells, gas sensors and rechargeable Li-ion batteries, etc. [ 2 ]. The electricalproperties of tin dioxide are of great importance from the technological point of view. Tin
Several samples of native (untreated), mercerized prior to ammonia treatment and ammonia-treated Egyptian cotton fabric strips have been prepared. On these samples several measurements were carried out, including infrared and electronic absorption spectroscopy, temperature dependent DC electric conductivity measurements and -radiation exposure. Detailed accounts of the spectral properties and phase constitution of NH3-treated cotton celluloses were correlated with their electrical properties. Finally, the mechanism of electric conduction in NH3-treated Egyptian fabric strips was put forward and correlated for the first time with the spectral properties and phase constitution of cotton textiles.
The electrical properties of NaxM1+yO2 (M=Mn,Co) were measured as a function of temperature under conditions of thermodynamic equilibrium for a quenched defect structure. The results of electrochemical studies of NaxM1+yO2 are also presented. A correlation is demonstrated between the structures of the ionic and electronic defects in these materials and the potential changes of the cathode in Na/Na+/NaxM1+yO2.
Silver antimony oxide (Ag2Sb2O6) having a defect pyrochlore structure has been synthesized by solid-state reaction between silver oxide and either Sb2O3 and Sb2O5. The reaction sequence has been shown by thermogravimetry, interdiffusion measurements on oxide pellets and electrical conductance measurements to involve the reduction of Ag2O, followed by diffusion of silver and oxygen into the antimony oxide component. When the starting material is Sb2O3, initial diffusion of oxygen occurs, forming Sb2O4 into which silver and further oxygen subsequently diffuse. Comparison of the activation energies for diffusion and electrical conductance in the various oxide phases suggests that the rate of Ag2Sb2O6 formation is controlled by the diffusion of oxygen rather than that of silver.