This title appears in the Scientific Report :
2005
Please use the identifier:
http://hdl.handle.net/2128/7697 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.95.256105 in citations.
Nonicosahedral Equilibrium Overlayers of Icosahedral Quasicrystals
Nonicosahedral Equilibrium Overlayers of Icosahedral Quasicrystals
We demonstrate that icosahedral Al-Pd-Mn quasicrystals can have nonicosahedrally ordered thermodynamic equilibrium overlayers. The formation of orthorhombic or decagonal equilibrium surface structures is determined by the phase equilibrium of the ternary alloy at given composition and temperature as...
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Personal Name(s): | Yurechko, M. |
---|---|
Grushko, B. / Ebert, Ph. | |
Contributing Institute: |
Mikrostrukturforschung; IFF-8 |
Published in: | Physical review letters, 95 (2005) S. 256105 |
Imprint: |
College Park, Md.
APS
2005
|
Physical Description: |
256105 |
DOI: |
10.1103/PhysRevLett.95.256105 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien Kondensierte Materie |
Series Title: |
Physical Review Letters
95 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.95.256105 in citations.
We demonstrate that icosahedral Al-Pd-Mn quasicrystals can have nonicosahedrally ordered thermodynamic equilibrium overlayers. The formation of orthorhombic or decagonal equilibrium surface structures is determined by the phase equilibrium of the ternary alloy at given composition and temperature as well as by the surface acting as nucleation site. Nonequilibrium steady-state orthorhombic and hexagonal structures can also be derived with the same methodology when taking preferential evaporation into account. The results describe consistently all presently observed surface structures. |