Chemically driven structural change in quasicrystalline AlPdMn alloys

Ampo Sai; Y. Yokohama; A. Inoue; T. Masumoto

doi:10.1016/0022-3093(92)90146-B

Chemically driven structural change in quasicrystalline AlPdMn alloys

Ampo Sai, Y. Yokohama, A. Inoue, T. Masumoto

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Quasicrystals, including face-centered icosahedral (FCI), simple icosahedral (SI) and decagonal (D) phases with periodicities of 1.6 nm and 1.2 nm along periodic axis, are found to form over a wide composition range in the AlPdMn system. A very strong composition dependence of the chemical order is seen in icosahedral Al_90-xPd_xMn₁₀ alloys alloys. A discontinuous change in the lattice parameter, a_R, with the Pd content of the i-phases suggests that the replacement of Al by Pd is selective. The predominant occupation site for the Pd atoms is icosahedral structure varies between the FCI and SI lattices. It is proposed that the FCI phase can be constructed as a two-cell structure, originating from the AlPd and AlMn binary systems.

Original language	English
Pages (from-to)	327-331
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	150
Issue number	1-3
DOIs	https://doi.org/10.1016/0022-3093(92)90146-B
Publication status	Published - 1992 Nov 2

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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10.1016/0022-3093(92)90146-B

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title = "Chemically driven structural change in quasicrystalline AlPdMn alloys",

abstract = "Quasicrystals, including face-centered icosahedral (FCI), simple icosahedral (SI) and decagonal (D) phases with periodicities of 1.6 nm and 1.2 nm along periodic axis, are found to form over a wide composition range in the AlPdMn system. A very strong composition dependence of the chemical order is seen in icosahedral Al90-xPdxMn10 alloys alloys. A discontinuous change in the lattice parameter, aR, with the Pd content of the i-phases suggests that the replacement of Al by Pd is selective. The predominant occupation site for the Pd atoms is icosahedral structure varies between the FCI and SI lattices. It is proposed that the FCI phase can be constructed as a two-cell structure, originating from the AlPd and AlMn binary systems.",

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T1 - Chemically driven structural change in quasicrystalline AlPdMn alloys

AU - Sai, Ampo

AU - Yokohama, Y.

AU - Inoue, A.

AU - Masumoto, T.

PY - 1992/11/2

Y1 - 1992/11/2

N2 - Quasicrystals, including face-centered icosahedral (FCI), simple icosahedral (SI) and decagonal (D) phases with periodicities of 1.6 nm and 1.2 nm along periodic axis, are found to form over a wide composition range in the AlPdMn system. A very strong composition dependence of the chemical order is seen in icosahedral Al90-xPdxMn10 alloys alloys. A discontinuous change in the lattice parameter, aR, with the Pd content of the i-phases suggests that the replacement of Al by Pd is selective. The predominant occupation site for the Pd atoms is icosahedral structure varies between the FCI and SI lattices. It is proposed that the FCI phase can be constructed as a two-cell structure, originating from the AlPd and AlMn binary systems.

AB - Quasicrystals, including face-centered icosahedral (FCI), simple icosahedral (SI) and decagonal (D) phases with periodicities of 1.6 nm and 1.2 nm along periodic axis, are found to form over a wide composition range in the AlPdMn system. A very strong composition dependence of the chemical order is seen in icosahedral Al90-xPdxMn10 alloys alloys. A discontinuous change in the lattice parameter, aR, with the Pd content of the i-phases suggests that the replacement of Al by Pd is selective. The predominant occupation site for the Pd atoms is icosahedral structure varies between the FCI and SI lattices. It is proposed that the FCI phase can be constructed as a two-cell structure, originating from the AlPd and AlMn binary systems.

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Chemically driven structural change in quasicrystalline AlPdMn alloys

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