Broadband High Temperature Impedance Spectroscopy

Equipment

The technical base of the laboratory allows measurements of complex impedance in frequency range from 0.1 Hz to 10 GHz and temperature range from 300 K to 1200 K. Up to 2 MHz we use 4-electrode setup. Up to 10 GHz we use a coaxial waveguide assembly. Our sample holders are made of platinum covered refractory ceramics and are adapted for studies of single crystals, ceramics, glasses, interfaces between different materials as well as integrated circuit devices, which operate under elevated temperatures. The waveguide chamber with a sample can be filled with a variety of gases. Please take a look at the papers on measurement methods:


1. A. Kežionis et al. Broadband method for the determination of small sample's electrical and dielectric Properties at high temperatures, Microwave Theory and Techniques IEEE Transactions, 62 (10), p. 2456-2461, (2014), [http://dx.doi.org/10.1109/TMTT.2014.2350963];


2. A. Kežionis et al. Four-electrode impedance spectrometer for investigation of solid ion conductors, Review of Scientific Instruments 84, 013902 (2013), [http://dx.doi.org/10.1063/1.4774391];


3. A. Kežionis et al. Broadband high frequency impedance spectrometer with working temperatures up to 1200 K, Solid State Ionics 188 110-113 (2011), [http://dx.doi.org/10.1016/j.ssi.2010.09.034].