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The effect of sinter temperature on the electrical properties of a new TiO 2 -based varistor system, TiO 2 .Y 2 O 3 .Nb 2 O 5 , was investigated by measuring the properties of I-V, permittivity and grain-boundary barriers. The varistor of 99.30%TiO 2 .0.60%Y 2 O 3 .0.10%Nb 2 O 5 composite sintered at 1400 o...
The effect of ZnO on the Nb-doped SnO 2 varistors was investigated. The grain boundary barrier height (Φ B ) of the varistors were determined by use of Schottky type of conduction mechanism. The grain boundary impedance measurements of the varistors were performed using the impedance spectroscopy technique. It was found that ZnO had a significant effect on the varistor properties of...
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