Nonlinear characteristics of Cr2O3, WO3, ZnO and CoO doped SnO2 varistors

SnO2 based ceramics doped with 1.0 mol% ZnO, 1.0 mol% CoO, 0.1 mol% WO3 and 0.05 mol% Cr2O3 show varistor behavior with nonlinear coefficient alpha=33, breakdown electric field EB=12.5 kV/cm, leakage current I=0.63 mA/cm2 and average grain size of 1.52 mum. Experimental evidence shows that the addit...

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Veröffentlicht in:	Materials letters 2006-01, Vol.60 (1), p.142-146
Hauptverfasser:	Margionte, M A L, Simoes, A Z, Riccardi, C S, Ries, A, Filho, F M, Perazolli, L, Varela, J A
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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