IMPEDANCE SPECTROSCOPY OF POLYCRYSTALLINE TIN DIOXIDE FILMS

Weak localization and electron-electron interactions in polycrystalline tin dioxide films

Electrical and magnetotransport properties of polycrystalline tin dioxide films were investigated in the temperature range 2-300 K and in high magnetic fields up to 27 T. The experimental data were analyzed using models inherent both for 2D and 3D disordered systems. A crossover from 2D to 3D behaviour was observed as the temperature was increased.

Impedance Spectroscopy of Thin Films

Impedance spectroscopy of epitaxial multiferroic thin films

Rainer Schmidt,1,* Wilma Eerenstein,1 Thomas Winiecki,2 Finlay D. Morrison,3 and Paul A. Midgley1 1Department of Materials Science, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom 2Department of Physics, University of Durham, South Road, Durham DH1 3LE, United Kingdom 3Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United Ki...

nano-scale surface modification of polycrystalline tin sulphide films during plasma treatment

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Impedance spectroscopy analysis of SnO2 thick-films gas sensors

A careful analysis of the impedance response of SnO2 thick films under vacuum and air atmosphere is reported in the present work. The AC electrical resistance was analyzed and it was shown that it is highly frequency dependent. Different models and its equivalent circuit representation were proposed and carefully analyzed based on the microstructure features of the device. Basically, an interpr...