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Title: Sol-gel process doped ZnO nanopowders and their grain growth

Abstract

The doped ZnO nanoparticles are prepared by a sol-gel method. These ZnO nanoparticles provide ZnO-based ceramic varistors displaying superior varistor properties--higher value of the nonlinear coefficient, lower leakage current, and higher critical electric field values--as compared to those of conventional samples. The present work has been aimed at studying the effect of processing variables such as sintering temperature and duration on the microstructure and grain growth of ZnO-Bi{sub 2}O{sub 3}-Sb{sub 2}O{sub 3}-MnO{sub 2}-Co{sub 2}O{sub 3}-Al{sub 2}O{sub 3} ceramics. The activation energy calculated is found to be 364 {+-} 24 KJ/mol for Bi{sub 2}O{sub 3}-Sb{sub 2}O{sub 3}-MnO{sub 2}-Co{sub 2}O{sub 3}-Al{sub 2}O{sub 3} doped ZnO. All these advantages are due to greater structural homogeneity, smaller particle size, higher surface area, and higher density of the doped ZnO nanoparticles which are precursors for ZnO varistors, as compared to coarser particles for making varistors.

Authors:
; ; ;  [1];  [2]
  1. Chinese Academy of Sciences, Urumuqi (China). Xing Jiang Inst. of Physics
  2. Sichuan Unite Univ., Chendu (China). Dept. of Materials Engineering
Publication Date:
OSTI Identifier:
532908
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 32; Journal Issue: 9; Other Information: PBD: Sep 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; GRAIN GROWTH; SOL-GEL PROCESS; ZINC OXIDES; DOPED MATERIALS; ACTIVATION ENERGY; PARTICLE SIZE; SURFACE AREA; BULK DENSITY

Citation Formats

Xueya, Kang, Tiandiao, Wang, Yin, Han, Minde, Tao, and Mingjing, Tu. Sol-gel process doped ZnO nanopowders and their grain growth. United States: N. p., 1997. Web. doi:10.1016/S0025-5408(97)00091-3.
Xueya, Kang, Tiandiao, Wang, Yin, Han, Minde, Tao, & Mingjing, Tu. Sol-gel process doped ZnO nanopowders and their grain growth. United States. https://doi.org/10.1016/S0025-5408(97)00091-3
Xueya, Kang, Tiandiao, Wang, Yin, Han, Minde, Tao, and Mingjing, Tu. 1997. "Sol-gel process doped ZnO nanopowders and their grain growth". United States. https://doi.org/10.1016/S0025-5408(97)00091-3.
@article{osti_532908,
title = {Sol-gel process doped ZnO nanopowders and their grain growth},
author = {Xueya, Kang and Tiandiao, Wang and Yin, Han and Minde, Tao and Mingjing, Tu},
abstractNote = {The doped ZnO nanoparticles are prepared by a sol-gel method. These ZnO nanoparticles provide ZnO-based ceramic varistors displaying superior varistor properties--higher value of the nonlinear coefficient, lower leakage current, and higher critical electric field values--as compared to those of conventional samples. The present work has been aimed at studying the effect of processing variables such as sintering temperature and duration on the microstructure and grain growth of ZnO-Bi{sub 2}O{sub 3}-Sb{sub 2}O{sub 3}-MnO{sub 2}-Co{sub 2}O{sub 3}-Al{sub 2}O{sub 3} ceramics. The activation energy calculated is found to be 364 {+-} 24 KJ/mol for Bi{sub 2}O{sub 3}-Sb{sub 2}O{sub 3}-MnO{sub 2}-Co{sub 2}O{sub 3}-Al{sub 2}O{sub 3} doped ZnO. All these advantages are due to greater structural homogeneity, smaller particle size, higher surface area, and higher density of the doped ZnO nanoparticles which are precursors for ZnO varistors, as compared to coarser particles for making varistors.},
doi = {10.1016/S0025-5408(97)00091-3},
url = {https://www.osti.gov/biblio/532908}, journal = {Materials Research Bulletin},
number = 9,
volume = 32,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 1997},
month = {Mon Sep 01 00:00:00 EDT 1997}
}