TY - JOUR
T1 - A hexagonal phase related to quasicrystalline phases in Zn-Mg-rare-earth system
AU - Singh, Alok
AU - Abe, E.
AU - Tsai, A. P.
PY - 1998/1/1
Y1 - 1998/1/1
N2 - The Z-Zn6Mg3Sm ternary phase has been studied by electron diffraction. Y and the rare-earth elements with atomic radii just below that of Sm in Zn6Mg3RE alloys (RE = rare earth or Y) form the icosahedral phase, while with Sm it forms the Z phase. The Z phase is hexagonal with a = 12.4 Å and c = 8.8 Å, and with the space group P63/mmc. The relationship of this phase to the icosahedral quasicrystal is demonstrated through diffraction features. It is shown that this hexagonal phase consists of three icosahedral units rotated by 120° about a common twofold axis, forming the sixfold axis. The similarity of this hexagonal phase to the hexagonal quasicrystal is shown.
AB - The Z-Zn6Mg3Sm ternary phase has been studied by electron diffraction. Y and the rare-earth elements with atomic radii just below that of Sm in Zn6Mg3RE alloys (RE = rare earth or Y) form the icosahedral phase, while with Sm it forms the Z phase. The Z phase is hexagonal with a = 12.4 Å and c = 8.8 Å, and with the space group P63/mmc. The relationship of this phase to the icosahedral quasicrystal is demonstrated through diffraction features. It is shown that this hexagonal phase consists of three icosahedral units rotated by 120° about a common twofold axis, forming the sixfold axis. The similarity of this hexagonal phase to the hexagonal quasicrystal is shown.
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U2 - 10.1080/095008398178660
DO - 10.1080/095008398178660
M3 - Article
AN - SCOPUS:0031994005
VL - 77
SP - 95
EP - 104
JO - Philosophical Magazine Letters
JF - Philosophical Magazine Letters
SN - 0950-0839
IS - 2
ER -