The Nanoscale Structure of the B and I-w Phases in Yttrium and Erbium SiAlONs

MacLaren, I. , Falk, L.K.L., Menke, Y., Diaz, A., Hampshire, S., Parmentier, J. and Thompson, D.P. (1999) The Nanoscale Structure of the B and I-w Phases in Yttrium and Erbium SiAlONs. In: Biennial Meeting of the Electron-Microscopy-and-Analysis-Group of the Institute of Physics (EMAG 99), Sheffield, UK, 24-27 Aug 1999, pp. 153-156. ISBN 9780750305778

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.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: MacLaren, Dr Ian
• Authors: MacLaren, I., Falk, L.K.L., Menke, Y., Diaz, A., Hampshire, S., Parmentier, J., and Thompson, D.P.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• ISBN: 9780750305778