Twinned one-dimensional quasicrystals in Bridgman-grown Al-Si-Cu-Co alloys

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1992-07-01
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Lograsso, Thomas
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Lograsso, Thomas
Ames Laboratory Division Director
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Goldman, Alan
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Ames National Laboratory

Ames National Laboratory is a government-owned, contractor-operated national laboratory of the U.S. Department of Energy (DOE), operated by and located on the campus of Iowa State University in Ames, Iowa.

For more than 70 years, the Ames National Laboratory has successfully partnered with Iowa State University, and is unique among the 17 DOE laboratories in that it is physically located on the campus of a major research university. Many of the scientists and administrators at the Laboratory also hold faculty positions at the University and the Laboratory has access to both undergraduate and graduate student talent.

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Abstract

Single grains of Al60Si2Cu18Co20 with a decaprismatic morphology were grown by the Bridgman method and studied by transmission electron microscopy and x-ray diffraction. Although the diffraction patterns of these grains superficially resemble that of a decagonal quasicrystal, a closer inspection reveals that they are composed of tenfold twins of a one-dimensional quasicrystal along with small domains of three crystalline approximant phases.

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This article is from Physical Review B 46 (1992): 115–119, doi:10.1103/PhysRevB.46.115.

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Wed Jan 01 00:00:00 UTC 1992
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