Please use this identifier to cite or link to this item:
Title: Properties and intergranular phase analysis of a ZnO-CoO-Bi<inf>2</inf>O<inf>3</inf>varistor
Authors: W. Onreabroy
N. Sirikulrat
A. P. Brown
C. Hammond
S. J. Milne
Keywords: Chemistry
Materials Science
Physics and Astronomy
Issue Date: 31-Jan-2006
Abstract: The electrical properties, microstructures and phase content of a ZnO-CoO-Bi2O3varistor have been characterised. High-resolution TEM and selected area electron diffraction provided detailed information on the distribution and structure of the intergranular Bi-rich phase. Triple points between the ZnO matrix grains contained crystallites that could be indexed to tetragonal β-Bi2O3, cubic γ-Bi2O3and δ-Bi2O3, or corresponding isostructural ZnO-Bi2O3phases. Thin-film, 1-2 nm grain boundaries were found to be amorphous, but for the first time, crystalline precipitates (with the β-Bi2O3type structure) were also detected in some thicker, 4-5 nm films. © 2005 Elsevier B.V. All rights reserved.
ISSN: 01672738
Appears in Collections:CMUL: Journal Articles

Files in This Item:
There are no files associated with this item.

Items in CMUIR are protected by copyright, with all rights reserved, unless otherwise indicated.