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Projects / Programmes source: ARIS

Micro-impedance spectroscopy

Research activity

Code Science Field Subfield
2.04.01  Engineering sciences and technologies  Materials science and technology  Inorganic nonmetallic materials 

Code Science Field
T150  Technological sciences  Material technology 
P352  Natural sciences and mathematics  Surface and boundary layery chemistry 
Keywords
microimpedance, point electrodes, grain conductivity, grain-boundary conductivity, silver chloride, polycrystalline materials
Evaluation (rules)
source: COBISS
Researchers (3)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  00582  PhD Miran Gaberšček  Materials science and technology  Researcher  1998 - 2001  899 
2.  10180  PhD Janko Jamnik  Materials science and technology  Researcher  1998 - 2001  337 
3.  01859  PhD Radovan Stane Pejovnik  Materials science and technology  Head  1998 - 2001  529 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0104  National Institute of Chemistry  Ljubljana  5051592000  20,869 
Abstract
A new technique for measuring the conductivity of a single grain in a ceramic (polycrystalline) material is proposed. It is based on impedance spectroscopy where instead of conventional planar electrodes, microelectrodes acting as points electrodes are used. By measuring impedance at various positions on the surface of a polycrystalline material and analysing the set of results using a deconvolution procedure, it will be possible to separately determine the bulk grain and the grain-boundary conductivity. As model materials, AgCl and AgBr single- and polycrystals will be used.
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