Effects of aluminum dopant concentration on morphology and electrical characteristic of ZnO varistors

Authors

Eduardo R. Magdaluyo, Jr. ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Norman S. Vitancol ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Roland V. Sarmago ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

The effects of aluminum dopant concentration on the morphology and electrical characteristics of zinc oxide varistors were investigated. Grain size does not significantly vary with the amount of aluminum dopant, but only the breakdown voltage, nonlinearity voltage coefficient α and k values were affected. An increasing trend was observed on the breakdown voltage at approximately 300 V, 410 V and 650 V and α values at 2.36, 2.44 and 3.48 for the 3 wt%, 5 wt% and 7 wt% aluminum-doped zinc oxide respectively. The k values decreased with increasing aluminum dopant.

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Issue

2004: Proceedings of the 22nd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2004-PB-13

Section

Poster Session PB

Published

2004-10-25

How to Cite

[1]

ER Magdaluyo, NS Vitancol, and RV Sarmago, Effects of aluminum dopant concentration on morphology and electrical characteristic of ZnO varistors, Proceedings of the Samahang Pisika ng Pilipinas 22, SPP-2004-PB-13 (2004). URL: https://proceedings.spp-online.org/article/view/SPP-2004-PB-13.