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Cited by 64 publications
(27 citation statements)
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“…In 1995, Pianaro et al, for the first time, found a new varistor material [5], (Co, Nb)-doped SnO 2 , which has only single phase, high density and rutile structure. In 1998, (Co, Ta)-doped SnO 2 varistors was investigated by Antunes et al [6]. In this work, the effects of Sc 2 O 3 on the…”
Section: Introductionmentioning
confidence: 85%
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“…In 1995, Pianaro et al, for the first time, found a new varistor material [5], (Co, Nb)-doped SnO 2 , which has only single phase, high density and rutile structure. In 1998, (Co, Ta)-doped SnO 2 varistors was investigated by Antunes et al [6]. In this work, the effects of Sc 2 O 3 on the…”
Section: Introductionmentioning
confidence: 85%
“…Co 2 O 3 should then form a solid solution in SnO 2 and lead to the high densification of this system[5,6]. The relative density of all the samples are around 98.5%, that is, proper Sc 2 O 3 addition can hardly affect the density of the (Co, Ta)-doped varistor material.The electrical nonlinear characteristics of the samples doped with different concentration of Sc 2 O 3 are shown inFig.…”
mentioning
confidence: 97%
“…Análises de MEV indicam uma microestrutura mais homogênea [13,[18][19][20][21][22][23][24][25][26], como pode ser observado na Fig. 3.…”
Section: Desenvolvimento Microestrutural E Papel Dos Dopantesunclassified
“…Outras vantagens apresentadas pelos sistemas de SnO 2 .CoO em relação aos sistemas de ZnO.Bi 2 O 3 é a necessidade de uma menor concentração de dopantes para obtenção de valores de e E r equivalentes [12,13,[18][19][20][21][22][23][24][25][26][27][28][29], além de uma maior resistência à degradação [28].…”
Section: Desenvolvimento Microestrutural E Papel Dos Dopantesunclassified
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