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Mostrando ítems 11-20 de 2008
Electrical and microstructural properties of (Zn, Nb, Fe)-doped SnO2 varistor systems
(Elsevier, 2004-12-09)
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 ...
Electrical characterization of lead zirconate titanate prepared by organic solution route
(Elsevier B.V., 2001-01-01)
Two series of lead zirconate titanate (PZT) ceramics with composition Zr/Ti approximate to 53/47 have been prepared by the organic solution route. The effects on the electrical properties of calcination temperature in one ...
Electrical and optical characteristics of SnO2 thin films prepared by dip coating from aqueous colloidal suspensions
(1997-12-01)
Starting from aqueous colloidal suspensions, undoped and Nb5+ doped SnO2 thin films have been prepared by using the dip-coating sol gel process. X-ray diffraction results show that films are polycrystalline with crystallites ...
Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions
(Elsevier B.V., 2005-01-01)
SnO2 varistors doped with CoO, Cr2O3 and Nb2O5 were prepared by evaporation and decomposition of suspensions. The composition of the varistors was optimized to improve electrical properties, such as nonlinearity, leakage ...
Structural, optical and electrical properties of DC sputtered indium saving indium tin oxide (ITO) thin films
(Elsevier, 2018)
Amorphous indium tin oxide (ITO) thin films with reduced to 50 mass% indium oxide
content were prepared by direct current (DC) sputtering of ITO target in mixed argonoxygen
atmosphere onto glass substrates preheated at ...
Electrical properties of vegetable oils between 20 Hz and 2 MHz
(Elsevier, 2014-01)
Electrical properties (permittivity and conductivity) of vegetable oils were determined in the frequency range from 20 Hz to 2 MHz. Commercial samples of corn, sunflower, soybean, grapeseed, cottonseed, olive, canola and ...
Structural and electrical properties of ZnO varistors containing different spinel phases
(Elsevier B.V., 2001-01-01)
Structural and electrical properties of ZnO varistors were investigated as a function of spinel composition. Six varistor mixtures differing only in chemical composition of spinel, were prepared by mixing separately ...
Effect of magnesium on structure and properties of LiNbO3 prepared from polymeric precursors
(Elsevier B.V., 2002-01-01)
The effect of magnesium addition on the phase formation and electric properties of LiNbO3 powder prepared from polymeric precursor was analyzed. It was shown that the unit-cell volume of the rhombohedral phase decreased ...
Electric and dielectric behavior of CaCu3Ti4O12-based thin films obtained by soft chemical method
(Elsevier B.V. Sa, 2011-10-13)
CaCu3Ti4O12 (stoichiometric) and Ca1.1Cu2.9Ti4O12 (non-stoichiometric) thin films have been prepared by the soft chemical method on Pt/Ti/SiO2/Si substrates, and their electrical and dielectric properties have been compared ...
The role of the oxygen vacancies on the microstructure development and on the electrical properties of SnO2-based varistors
(Springer, 2004-07-31)
Variations on the microstructure development and on the electrical properties of SnO2-based varistors are discussed on the basis of the oxygen vacancies created or annihilated by the presence of different additives. Electron ...