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Crystal Structure Of Hexagonal Phases And Its Relation To Icosahedral Quasicrystalline Phase In Zn-Mg-RE (RE = Rare Earth) System

Published online by Cambridge University Press:  10 February 2011

Hiroyuki Takakura ,
T. J. Sato ,
A. P. Tsai ,
A. Sato  and
A. Yamamoto
Hiroyuki Takakura
Affiliation:
Natonal Research Institute for Metals, Tsukuba, Japan, [email protected] Core Research in Evolutional Science and Technology, Japan Science and Technology Corporation, Kawaguchi, Saitama, Japan
T. J. Sato
Affiliation:
Natonal Research Institute for Metals, Tsukuba, Japan, [email protected]
A. P. Tsai
Affiliation:
Natonal Research Institute for Metals, Tsukuba, Japan, [email protected]
A. Sato
Affiliation:
National Institute for Research in Inorganic Materials, Tsukuba, Japan
A. Yamamoto
Affiliation:
National Institute for Research in Inorganic Materials, Tsukuba, Japan
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Abstract

A relationship between hexagonal phases in the Zn-Mg-RE (RE=rare earth) system and icosahedral quasicrystalline phase is discussed. There are three hexagonal phases in the vicinity of Zn6Mg3RE1 which are related with a lattice parameters by a ratio 3:5:7 but with approximately the same c parameters. A structural model for the phase with medium a lattice parameter is proposed based on the structures of the other two phases recently determined. We also show a preliminary result of X-ray diffraction study of the Zn-Mg-Ho icosahedral phase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 553: Symposium LL – Quasicrystals , 1998 , 129
Copyright
Copyright © Materials Research Society 1999

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References

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