In situ high-resolution transmission electron microscopy observation of the phason-strain relaxation process in an Al-Cu-Co-Si decagonal quasicrystal
- 8 November 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 70 (18), 184202
- https://doi.org/10.1103/physrevb.70.184202
Abstract
Transition process from a rational approximant state, which is regarded as containing a uniform phason strain in a quasicrystalline state, to the quasicrystalline state in the Al-Cu-Co-Si system has been observed by in situ high-temperature high-resolution transmission electron microscopy (HRTEM). The tiling pattern changing with lapse of time in the HRTEM image has been analyzed, and the spatial and temporal variations of the phason field have been deduced. The results show that two types of processes lead the phason-strain relaxation: one is the shrink of the area with the uniform strain by shifting the boundaries and the other a continuous strain-relaxation in the area outside of the boundary. Such processes arise from a combination of collective and successive phason flips like domino-toppling along different symmetry directions.Keywords
This publication has 32 references indexed in Scilit:
- Scanning tunneling microscopy of an Al-Ni-Co decagonal quasicrystalPhysical Review B, 2002
- Triple-axis neutron-scattering study of phason dynamics in Al-Mn-Pd quasicrystalsPhysical Review B, 2000
- Time-of-flight neutron-scattering study of phason hopping in decagonal Al-Co-Ni quasicrystalsPhysical Review B, 1999
- Investigation of phason strains in decagonal Al-Pd-Mn single quasicrystals by means of x-ray diffractionJournal of Physics: Condensed Matter, 1998
- Experimental Ammann-line analysis of phasons in the Al-Cu-Co-Si decagonal quasicrystalPhysical Review B, 1994
- Evidence for Phason Hopping in Icosahedral AlFeCu Quasi-CrystalsEurophysics Letters, 1991
- Growth-induced phason strains in icosahedral quasicrystals of Al-Li-CuPhysical Review B, 1988
- Distortion and Peak Broadening in Quasicrystal Diffraction PatternsPhysical Review Letters, 1986
- Phonons, phasons, and dislocations in quasicrystalsPhysical Review B, 1986
- Quasicrystals. I. Definition and structurePhysical Review B, 1986