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Revista mexicana de física
versión impresa ISSN 0035-001X
Resumen
BONDARCHUK, A.; SHPOTYUK, O.; GLOT, A. y KLYM, H.. Current saturation in In2O3-SrO ceramics: a role of oxidizing atmosphere. Rev. mex. fis. [online]. 2012, vol.58, n.4, pp.313-316. ISSN 0035-001X.
Current-voltage dependence in In2O3-SrO ceramics contains a region where the current is increased weaker than the voltage. Such behavior is observed in oxygen atmosphere and is not registered in an inert one. Nonlinear current-voltage dependence is explained in terms of a relation between electronic processes at the grain boundaries and adsorption of oxygen in electric field. The role of adsorption processes is discussed on the basis of obtained data (current-voltage dependences, pore size distribution, secondary electron microscopy, and humidity sensitivity of conductance).
Palabras llave : Current limiting; indium oxide ceramics; adsorption processes.