The tin dioxide is an n-type semiconductor, which exhibits varistor behavior with high capacity of absorption of energy, whose function is to restrict transitory over-voltages without being destroyed, when it is doped with some oxides. Varistors are used in alternated current fields as well as in continuous current, and it can be applied in great interval of voltages or in great interval of currents. The electric properties of the varistor depend on the defects that happen at the grain boundaries and the adsorption of oxygen. The (98.90-x)%SnO2.0.25%CoO+0.75%MnO2+0.05%Ta2O5+0.05%Tr2O3 systems, in which Tr=La or Nd. Current-voltage measurements were accomplished for determination of the non-linear coefficient were studied. SEM microstructure...
The SnO2 based varistor systems recently presented in the literature appear to have a promising pote...
This work illustrates the advancement of research on TiO2-based electroceramics. In this work will b...
A proposta deste trabalho foi o estudo e a obtenção de uma cerâmica densa à base de SnO2 dopada com ...
The present paper aims to verify the influence of rare earth oxide such as lanthanum (La2O3) and neo...
The present paper aims to verify the inuence of rare earth oxide such as lanthanum (La2O3) and neody...
The effect of La2O3 addition on the densification and electrical properties of the (0.9895 - x) SnO2...
The effect of La2O3 addition on the densification and electrical properties of the 0:9895ÿ xSnO2 0:...
The effects of La2O3 on the properties of (Zn, Co, Ta) doped SnO2 varistors were investigated in thi...
The influence of yttrium oxide, Y2O3, on the microstructure development of the SnO(2)center dot Co(3...
The SnO2 based varistor systems recently presented in the literature appear to have a promising pote...
The effect of Fe2O3 addition on the densification and electrical properties of the (0.9895 - x) SnO2...
The effect of Fe2O3 addition on the densification and electrical properties of the (0.9895 − x) SnO2...
SnO2-based varistors doped with 0.5 % cobalt, 0.5 % zinc and various tantalum amounts were prepared ...
The influence of the dopant Pr6O11 was investigated with regard to the electrical and microstructura...
The electrical properties of tin oxide varistors doped with CoO, Nb2O5 and Cr2O3, were investigated ...
The SnO2 based varistor systems recently presented in the literature appear to have a promising pote...
This work illustrates the advancement of research on TiO2-based electroceramics. In this work will b...
A proposta deste trabalho foi o estudo e a obtenção de uma cerâmica densa à base de SnO2 dopada com ...
The present paper aims to verify the influence of rare earth oxide such as lanthanum (La2O3) and neo...
The present paper aims to verify the inuence of rare earth oxide such as lanthanum (La2O3) and neody...
The effect of La2O3 addition on the densification and electrical properties of the (0.9895 - x) SnO2...
The effect of La2O3 addition on the densification and electrical properties of the 0:9895ÿ xSnO2 0:...
The effects of La2O3 on the properties of (Zn, Co, Ta) doped SnO2 varistors were investigated in thi...
The influence of yttrium oxide, Y2O3, on the microstructure development of the SnO(2)center dot Co(3...
The SnO2 based varistor systems recently presented in the literature appear to have a promising pote...
The effect of Fe2O3 addition on the densification and electrical properties of the (0.9895 - x) SnO2...
The effect of Fe2O3 addition on the densification and electrical properties of the (0.9895 − x) SnO2...
SnO2-based varistors doped with 0.5 % cobalt, 0.5 % zinc and various tantalum amounts were prepared ...
The influence of the dopant Pr6O11 was investigated with regard to the electrical and microstructura...
The electrical properties of tin oxide varistors doped with CoO, Nb2O5 and Cr2O3, were investigated ...
The SnO2 based varistor systems recently presented in the literature appear to have a promising pote...
This work illustrates the advancement of research on TiO2-based electroceramics. In this work will b...
A proposta deste trabalho foi o estudo e a obtenção de uma cerâmica densa à base de SnO2 dopada com ...