Faceting in bond-oriented glasses and quasicrystals

It is shown that long-range positional order, in the sense that the density Fourier transform is a set of delta functions, is not essential for the phenomenon of facet formation. Facets can occur in certain classes of perfect bond-oriented systems which lack the conventional long-range positional or...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 1987-09, Vol.59 (10), p.1116-1119
Main Authors: HO, T. L, JASZCZAK, J. A, LI, Y. H, SAAM, W. F
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Defects and impurities in crystals
microstructure
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Physics
Solid surfaces and solid-solid interfaces
Specific materials
Structure of solids and liquids
crystallography
Surface structure and topography
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It is shown that long-range positional order, in the sense that the density Fourier transform is a set of delta functions, is not essential for the phenomenon of facet formation. Facets can occur in certain classes of perfect bond-oriented systems which lack the conventional long-range positional order, allowing the appearance of widths in the diffraction peaks. The predicted facets in some of these systems are consistent with the recently observed triacontahedral grain shapes in Al6LiCu3 and dodecahedral grain shapes in Al-Mn-Si, as well as with strong spatial disorder as indicated by X-ray diffraction measurements. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.59.1116