Suboxides of Aluminium as Revealed by Electron Diffraction

✍ Scribed by S. Yamaguchi

• Publisher: John Wiley and Sons
• Year: 1974
• Tongue: English
• Weight: 145 KB
• Volume: 9
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.19740090105

✦ Synopsis

Suboxides of Aluminium as Revealed by Electron Diffraction

A thin foil of aluminium with a thickness of about one pm was oxidized in air for several seconds a t about 300 "C. The graycoloured specimen obtained gave the electron diffraction pattern reproduced in Figure 1. This figure is composed of the diffraction spots from aluminium and the rings from gamma-A1,0,. Furthermore, it is noted here that around the (200) reflections of aluminium there are found a lot of satellites. The presence of satellitic reflections implies as a rule the formation of a superlattice.

The positions of the satellites measured on Figure 1 correspond to the interplanar spacings distributes between 2.03 and 2.15 A. These values all remained larger than the (200) spacing of aluminium, i.e. 2.02 A.