Phonon–Phason Coupling Strength in a Tsai-Type Ag–In–Yb Icosahedral Quasicrystal
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- Zhang Jinjia
- Institute of Industrial Science, The University of Tokyo
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- Zhou Jintao
- Institute of Industrial Science, The University of Tokyo
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- Tokumoto Yuki
- Institute of Industrial Science, The University of Tokyo
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- Edagawa Keiichi
- Institute of Industrial Science, The University of Tokyo
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Abstract
<p>Owing to the quasiperiodic order, one independent term in the elasticity of quasicrystals (phonon–phason coupling) is characteristic of quasicrystals. It is not seen in conventional crystals and has continued to be a significant subject in the research field of quasicrystals. Recently, a novel method was applied to a Mackay-type Al–Pd–Mn icosahedral quasicrystal to prove the existence of phonon–phason coupling and to evaluate its strength based on the elasticity of quasicrystals. This study applied the method to a Tsai-type Ag–In–Yb icosahedral system to evaluate its phonon–phason coupling strength. We applied phonon strain to the quasicrystal at a temperature with active phason, and the induction of phason strain was successfully detected and evaluated using powder X-ray diffraction. We evaluated the phonon–phason coupling elastic constant of the Ag–In–Yb icosahedral quasicrystal to be 0.17 ± 0.04 GPa by quantitatively comparing the measured induced phason strain with our calculation results.</p>
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 64 (5), 945-949, 2023-05-01
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390577354352659584
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- NII Book ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 032803959
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- KAKEN
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- Abstract License Flag
- Disallowed