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Electrical properties of the SnO2-based varistor
(1998-12-01)
The non-linear electrical properties of CoO-doped and Nb205-doped SnO2 ceramics were characterized. X-ray diffraction and scanning electron microscopy indicated that the system is single phase. The electrical conduction ...
EXAFS investigation on Sb incorporation effects to electrical transport in SnO2 thin films deposited by sot-gel
(Elsevier B.V., 2007-01-01)
The effect of Sb doping in SnO2 thin films prepared by the sol-gel dip-coating (SGDC) process is investigated. Electronic and structural properties are evaluated through synchrotron radiation measurements by EXAFS and ...
Electronic ceramics based on polycrystalline SnO2, TiO2 and (Sn xTi1-x)O2 solid solution
(ABM, ABC, ABPol, 2006-09-01)
In the present text we discuss on electronic properties arising from polycrystalline semiconductor ceramics of SnO2, TiO2 and (Sn xTi1-x)O2 solid solution rutile-type structure. This is intended to be a short overview of ...
On the photo-induced electrical conduction related to gas sensing of the Sb:SnO2/TiO2 heterostructure
(2018-10-01)
In this work, changes on the electrical properties as function of the temperature and gas addition on the surface of the 4at%Sb:SnO2/TiO2 heterostructure are investigated. This heterojunction privileges the gas sensor ...
Electrical and micro structural properties of (Zn, Nb, Fe)-doped SnO2 varistor systems
(Elsevier B.V., 2005-01-01)
The electrical and microstructural properties of SnO2-based varistors with the addition of 0.025 and 0.050 mol% of Fe2O3 have been characterised. Electric field (E) versus current density (J) curves showed that the effect ...
Influence of Ta2O5 on the electrical properties of ZnO- and CoO-doped SnO2 varistors
(Elsevier B.V., 2004-01-01)
SnO2-based varistors doped with 0.5% cobalt, 0.5% zinc and various tantalum amounts were prepared by the solid-state route. Experimental evidence shows that small quantities of Ta2O5 improve the nonlinear properties of the ...
Structural and microstructural behaviour of SnO2 dense ceramics doped with ZnO and WO3
(Elsevier B.V., 2005-06-01)
SnO2-based varistors doped with ZnO and WO3 were prepared by mixed oxide method. Experimental evidence shows that the increase in ZnO amount increases the volume and microstrain of unit cell while the WO3 promotes a decrease. ...
Er rare-earth ion incorporation in sol-gel SnO2
(ABM, ABC, ABPol, 2003-12)
Er-doped SnO2 thin films and xerogels are obtained by sol-gel technique. In order to understand the Er³+ rare-earth ion activity in SnO2 matrix, a characterization of Er incorporation is done through emission and excitation ...
Electron trapping of laser-induced carriers in Er-doped SnO2 thin films
(Elsevier B.V., 2007-01-01)
In order to investigate optically excited electronic transport in Er-doped SnO2, thin films are excited with the fourth harmonic of an Nd:YAG laser (266nm) at low temperature, yielding conductivity decay when the illumination ...
Influence of processing parameters on nanomaterials synthesis efficiency by a carbothermal reduction process
(Springer, 2011-05-01)
In this work, the influence of synthesis parameters on the synthesis efficiency of tin oxide nanomaterials was studied by using the carbothermal reduction method in a sealed tube furnace. The parameters were the starting ...