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APS » Journals » Phys. Rev. Lett. » Volume 85 » Issue 8
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Phys. Rev. Lett. 85, 1674–1677 (2000)

High Resolution Transmission Electron Microscopy Observation of Thermally Fluctuating Phasons in Decagonal Al-Cu-Co

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Keiichi Edagawa and Kunio Suzuki
Institute of Industrial Science, The University of Tokyo, Roppongi, Minato-ku, Tokyo 106-8558, Japan

Shin Takeuchi
Department of Materials Science and Engineering, Science University of Tokyo, Noda, Chiba 278-8510, Japan

Received 13 March 2000; published in the issue dated 21 August 2000

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In situ high-temperature, high resolution transmission electron microscopy (HRTEM) was performed on an Al-Cu-Co decagonal quasicrystal, to investigate thermal fluctuation of phasons. A tiling pattern constructed from the HRTEM image was analyzed in the framework of the strip-projection method. Transitions between two local tile arrangements were observed at high temperature for the first time, and were shown to correspond to a thermal phason fluctuation.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.1674
DOI:
10.1103/PhysRevLett.85.1674
PACS:
61.44.Br, 61.16.Bg, 61.72.Ff, 65.50.+m
 
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