Stability and compression behaviour of icosahedral Zn-Mg-y quasicrystal under high pressures up to 70 GPa

M. Hasegawa, A. P. Tsai, T. Yagi

研究成果: Article査読

6 被引用数 (Scopus)

抄録

The stability of an icosahedral Zn55Mg35Y10quasicrystal has been investigated under uniaxial high pressures up to 70 GPa by means of an in-situ angle-dispersive X-ray powder diffraction method using synchrotron radiation and diamond anvil cell. The icosahedral structure of the Zn55Mg35Y10quasicrystal is found to be essentially stable under high pressures up to 70 GPa. It is found that no anisotropy of the pressure dependence of d/d0can be distinguished for each index, indicating isotropic compression of the quasicrystal. The zero-pressure bulk modulus and its pressure derivative are calculated to be 73 ± 1 GPa and Bq = 3.6 ± 0.1 respectively. This indicates that the icosahedral Zn55Mg35Y10quasicrystal as well as the icosahedral Al60Li30Cu10quasicrystal, both of which are of Zn-Mg-Al type, is more compressible than icosahedral Al-transition metal type quasicrystals reported so far. The sample recovered from 70 GPa is essentially of quasicrystal structure and estimated to have about 0.73% residual strain.

本文言語English
ページ(範囲)1769-1778
ページ数10
ジャーナルPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
80
8
DOI
出版ステータスPublished - 2000 8月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 材料科学(全般)
  • 凝縮系物理学
  • 物理学および天文学(その他)
  • 金属および合金

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