Development of a single-crystal X-ray diffraction system for hydrostatic-pressure and low-temperature structural measurement and its application to the phase study of quasicrystals

T. Watanuki, A. MacHida, T. Ikeda, A. Ohmura, H. Kaneko, K. Aoki, T. J. Sato, A. P. Tsai

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

We constructed a single-crystal synchrotron X-ray diffraction system to precisely study the structure under hydrostatic pressure conditions at low temperatures and applied it to a study on the phase transition phenomena of a Cd-Yb periodic approximant and a Cd-Yb quasicrystal. Four phases were newly observed for the 1/1 approximant crystal in a P-T range up to 5.2 GPa and down to 10 K. The innermost part of the atomic clusters of Cd4 tetrahedra exhibited various orientational ordering sensitively depending on pressure and temperature. High pressure diffraction measurements using a highly parallel synchrotron X-ray beam and a hydrostatically compressed single crystal enabled us to detect the weak diffractions due to the subtle structural changes.

Original languageEnglish
Pages (from-to)2905-2911
Number of pages7
JournalPhilosophical Magazine
Volume87
Issue number18-21
DOIs
Publication statusPublished - 2007 Jul
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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