Refinement of d-AlNiCo quasicrystal structures

Hiroyuki Takakura; Akiji Yamamoto; An Pang Tsai

Refinement of d-AlNiCo quasicrystal structures

Hiroyuki Takakura, Akiji Yamamoto, An Pang Tsai

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

Abstract

The models of decagonal Al₇₂Ni₂₀Co₈ quasicrystal with the space group of P10₅/mmc were refined on the basis of single crystal x-ray diffraction data set using the 5D description. The results of a structure model derived from Al₁₃Fe₄-type approximant crystal and Burkov model are compared. The former gives ωR=0.045 and R=0.063 for 449 reflections with 103 parameters and a reasonable chemical composition of Al_71.2TM_28.8 (TM=transition metals). The projected structure is consistent with high resolution images of this material. On the other hand, the latter gives ωR=0.161 and R=0.193 for 55 parameters and a composition of Al_64.6TM_35.1.

Original language	English
Pages (from-to)	K991-K996
Journal	Materials Research Society Symposium - Proceedings
Volume	643
Publication status	Published - 2001 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Refinement of d-AlNiCo quasicrystal structures",

abstract = "The models of decagonal Al72Ni20Co8 quasicrystal with the space group of P105/mmc were refined on the basis of single crystal x-ray diffraction data set using the 5D description. The results of a structure model derived from Al13Fe4-type approximant crystal and Burkov model are compared. The former gives ωR=0.045 and R=0.063 for 449 reflections with 103 parameters and a reasonable chemical composition of Al71.2TM28.8 (TM=transition metals). The projected structure is consistent with high resolution images of this material. On the other hand, the latter gives ωR=0.161 and R=0.193 for 55 parameters and a composition of Al64.6TM35.1.",

author = "Hiroyuki Takakura and Akiji Yamamoto and Tsai, {An Pang}",

year = "2001",

month = jan,

day = "1",

language = "English",

volume = "643",

pages = "K991--K996",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

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TY - JOUR

T1 - Refinement of d-AlNiCo quasicrystal structures

AU - Takakura, Hiroyuki

AU - Yamamoto, Akiji

AU - Tsai, An Pang

PY - 2001/1/1

Y1 - 2001/1/1

N2 - The models of decagonal Al72Ni20Co8 quasicrystal with the space group of P105/mmc were refined on the basis of single crystal x-ray diffraction data set using the 5D description. The results of a structure model derived from Al13Fe4-type approximant crystal and Burkov model are compared. The former gives ωR=0.045 and R=0.063 for 449 reflections with 103 parameters and a reasonable chemical composition of Al71.2TM28.8 (TM=transition metals). The projected structure is consistent with high resolution images of this material. On the other hand, the latter gives ωR=0.161 and R=0.193 for 55 parameters and a composition of Al64.6TM35.1.

AB - The models of decagonal Al72Ni20Co8 quasicrystal with the space group of P105/mmc were refined on the basis of single crystal x-ray diffraction data set using the 5D description. The results of a structure model derived from Al13Fe4-type approximant crystal and Burkov model are compared. The former gives ωR=0.045 and R=0.063 for 449 reflections with 103 parameters and a reasonable chemical composition of Al71.2TM28.8 (TM=transition metals). The projected structure is consistent with high resolution images of this material. On the other hand, the latter gives ωR=0.161 and R=0.193 for 55 parameters and a composition of Al64.6TM35.1.

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M3 - Article

AN - SCOPUS:0035557481

VL - 643

SP - K991-K996

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

SN - 0272-9172

ER -

Refinement of d-AlNiCo quasicrystal structures

Abstract

ASJC Scopus subject areas

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