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The nanoscale structure of the B and I-w phases in yttrium and erbium SiAlONs

Lookup NU author(s): Emeritus Professor Derek Thompson

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Abstract

High resolution electron microscopy has been used to examine the nanoscale structure of the related B and I-w phases in Y and Er SiAlONs. B-phase was found to consist of nanoscale domains with a lower symmetry than the average hexagonal symmetry. The monoclinic cell of I-w can be clearly imaged by HREM and work is in progress to use these images in the determination of atomic positions in the unit cell. One consequence of the ordered structure of I-w is the possibility of forming domain boundaries, and two of the three possible types of domain boundaries have now been imaged using HREM.


Publication metadata

Author(s): MacLaren I, Falk LKL, Menke Y, Diaz A, Hampshire S, Parmentier J, Thompson DP

Editor(s): Kiely, C.K.

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Biennial Meeting of the Electron Microscopy and Analysis Group of the Institute of Physics (EMAG)

Year of Conference: 1999

Pages: 153-156

ISSN: 0951-3248

Publisher: Taylor & Francis

Library holdings: Search Newcastle University Library for this item

Series Title: Electron Microscopy and Analysis

ISBN: 9780750305778


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