Phason-Strain Influence on Low-Temperature Specific Heat of
the Decagonal Al-Ni-Co Quasicrystal

Chin. Phys. Lett.

2001, Vol. 18

Issue (4): 570-573 DOI:

Original Articles

Phason-Strain Influence on Low-Temperature Specific Heat of the Decagonal Al-Ni-Co Quasicrystal

LI Cui-Lian;LIU You-Yan

Department of Physics, South China University of Technology, Guangzhou 510640

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LI Cui-Lian, LIU You-Yan 2001 Chin. Phys. Lett. 18 570-573

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Abstract According to the quasicrystal continuum model and linear elasticity theory, based on the equivalence assumption of phonons and phasons in quasicrystals we have deduced five phase-velocities of elastic wave propagating in the decagonal quasicrystals. By inserting these velocities into the specific heat expression, we have successed in explaining the experiment of specific heat performed on the single-grained decagonal Al-Ni-Co quasicrystals at low temperature. Our results show that the contribution of the phason-strain to the specific heat cannot be neglected at low-temperature. Moveover, the phason-strain may be a main reason that the decagonal quasicrystals possess anisotropic thermal conductivity.

Keywords: 61.44.Br 05.70.Ce 62.20.Dc

Published: 01 April 2001

PACS:	61.44.Br	(Quasicrystals)
	05.70.Ce	(Thermodynamic functions and equations of state)
	62.20.Dc

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I4/0570

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