title: Four-electrode impedance spectrometer for investigation of solid ion conductors.
abstract: An impedance spectrometer capable of accurately measuring solid ion conducting sample impedance spectra by two- or four-electrode methods in either time or frequency domain has been built. The four-electrode measurement mode is implemented by constructing a differential amplifier with a very high input impedance and common mode rejection ratio over a wide frequency range. All of the measurements can be performed in frequencies ranging from 10 Hz to 2 MHz and sample temperatures up to 800 K. The working principle of the spectrometer as well as its technical parameters and accuracy estimation are presented in this paper. The advantage of four-electrode over two-electrode measurement mode is shown by an example of Ce(0.9)Gd(0.1)O(1.95) solid electrolyte ceramic impedance measurements.
authors: Faculty of Physics, Vilnius University, Saulėtekio alėja 9/3, LT-10222 Vilnius, Lithuania.
authors: A
authors: A
authors: Kežionis
authors: P
authors: P
authors: Butvilas
authors: T
authors: T
authors: Šalkus
authors: S
authors: S
authors: Kazlauskas
authors: D
authors: D
authors: Petrulionis
authors: T
authors: T
authors: Žukauskas
authors: E
authors: E
authors: Kazakevičius
authors: A F
authors: AF
authors: Orliukas