Published June 25, 2010
| Version v1
Journal article
o'-Al13Co4, a new quasicrystal approximant
Creators
- 1. Laboratory of Crystallography, ETH Zurich, 8093 Zurich (Switzerland)
Description
The crystal structure of o'-Al13Co4, a new Al13TM4 (TM = transition metal) modification was determined by single-crystal X-ray diffraction. The phase, with Pearson symbol oP204-x (x = 6), crystallizes in the orthorhombic space group Pnma (No. 62) with lattice parameters a = 28.890(4) A, b = 8.138(2) A and c = 12.346(1) A. The structure, which can be seen as a stacking of four flat and puckered atomic layers along the pseudo-tenfold b axis, is closely related to o-Al13Co4 and m-Al13Co4. First-principles total-energy calculations indicate that all these related Al13Co4 modifications, some of them stabilized by vacancies, seem to be slightly unstable at low temperatures.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jallcom.2010.03.188Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2010.03.188;
- PII
- S0925-8388(10)00709-7;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 500
- Journal Issue
- 2
- Journal Page Range
- p. 153-160
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42033456
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM ALLOYS; COBALT ALLOYS; COMPUTERIZED SIMULATION; INTERMETALLIC COMPOUNDS; LATTICE PARAMETERS; LAYERS; MONOCRYSTALS; ORTHORHOMBIC LATTICES; SPACE GROUPS; VACANCIES; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; COHERENT SCATTERING; CRYSTAL DEFECTS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CRYSTALS; DIFFRACTION; POINT DEFECTS; SCATTERING; SIMULATION; SYMMETRY GROUPS; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.