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Elastic constants and anisotropic internal frictions of decagonal single quasicrystal at low temperatures
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10.1063/1.3457898
/content/aip/journal/jap/108/1/10.1063/1.3457898
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/1/10.1063/1.3457898

Figures

Image of FIG. 1.
FIG. 1.

-group and -group free-vibration resonance spectra obtained by EMAR at 290 K. Indices in the figure denote vibration modes identified by surface-displacement-distribution measurements by laser-Doppler interferometry.

Image of FIG. 2.
FIG. 2.

A ring-down curve for the mode obtained by EMAR at 290 K. Solid line in the figure shows a least-squares fitting result of an exponential function to the measurements to determine the internal frictions of the mode .

Image of FIG. 3.
FIG. 3.

Temperature dependence of elastic constants and bulk modulus of decagonal single QC. Open circles represent measurement points and solid curves show least-squares fitting results to Eq. (6) .

Image of FIG. 4.
FIG. 4.

A relationship between and . The data plots include present decagonal and icosahedral , which we obtained previously (Ref. 27 ).

Tables

Generic image for table
Table I.

Elastic constants (GPa), bulk modulus (GPa), and acoustic Debye temperature (K) of the decagonal single QC obtained at 5 and 290 K.

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Table II.

Internal-friction-tensor components of the decagonal single QC obtained at 5 and 290 K. The longitudinal component in the -direction, , shows a notably high value, by about one order of magnitude, throughout the studied temperature range.

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/content/aip/journal/jap/108/1/10.1063/1.3457898
2010-07-08
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Elastic constants and anisotropic internal frictions of decagonal Al72Ni18Co8 single quasicrystal at low temperatures
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/1/10.1063/1.3457898
10.1063/1.3457898
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