Features of the Mackay Clusters with and without a Center Atom in Al Based Approximants of Icosahedral Quasicrystals

Shota Suzuki; Rayko Simura; Kazumasa Sugiyama

doi:10.4028/www.scientific.net/KEM.508.353

Paper Titles

Synthesis and Structural Investigation of Metal Hydride, Y(Mn_1-xFe_x)₂H_y (x ≤ 0.3, 4.0 ≤ y ≤ 4.5) and Complex Hydride, Y(Mn_1-xFe_x)₂H₆
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Charging and Discharging Phenomena in Organic Photoconductors Observed Using Electron Holography
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Tantalum Vacancy Effects on Electrical Conductivity of La₃Ta₀_.₅Ga_5.₅O₁₄ and Ba-Based P321 Crystals
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Emission Characteristics of Copper Ionic Lines from the 3d⁹5s-3d⁹4p Transition in a Low-Pressure Laser-Induced Plasma
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Optical Conductivity of Rattling Phonons in Type-I Clathrates Ba₈Ga₁₆Ge₃₀ and Ba₈Ga₁₆Sn₃₀
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Suppression of Spin Pumping in the Presence of Thin Titanium Interlayer
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Features of the Mackay Clusters with and without a Center Atom in Al Based Approximants of Icosahedral Quasicrystals
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Dislocation Dynamics in Bending Deformation of Si
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Computer Simulation Model for Multi-Size Spherical Particles Reinforced Composite Materials
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Features of the Mackay Clusters with and without a Center Atom in Al Based Approximants of Icosahedral Quasicrystals

Abstract:

The Packing Features of Mackay and Pseudo Mackay Clusters in Al Based Approximants to Icosahedral Phases Are Surveyed. The Cubic Approximants of α-AlMnSi, AlReSi, and α-(Al,Si)CuFe Indicate Typical Mackay Clusters Composed by the Dense Icosahedral Shell Packing. On the other Hand, the Cubic Approximants of α-Alcuru and α-(Al,Si)CuFe and the Non-Cubic Approximants of Ir₉Al₂₈, χ-AlPdRe, and R-AlPdCo Shows so-Called Pseudo Mackay Clusters in which the Icosahedral Packing Feature Is Disappeared at their First Shells. The Distorted First Shells Represent a Variation of Pseudo Mackay Clusters, which Could Be Classified into Three Subgroups Based on the Symmetry.