Elastic moduli of a single quasicrystal of decagonal Al-Ni-Co: Evidence for transverse elastic isotropy
Elastic moduli of a single quasicrystal of decagonal Al-Ni-Co: Evidence for transverse elastic isotropy
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DOI：
10.1103/physrevlett.80.321
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发表时间：
1998-01-12
影响因子：
8.6
通讯作者：
Darling, TW
中科院分区：
文献类型：
--
作者：
Chernikov, MA;Ott, HR;Darling, TW
在5 ~ 290 K的温度范围内，用共振超声光谱法测定了Al-Ni-Co准晶合金的弹性模量c（ij）。十次对称Al-Ni-Co合金的横向弹性各向同性为（0.02 ± 0.04）%。弹性模量c（ij）（T）表现出弱的温度依赖性。根据在5 K下测得的c（ij）计算的弹性德拜温度Theta（D）（el）与从低温比热实验获得的热力学德拜温度Theta（D）（th）吻合得很好。
The single quasicrystal elastic moduli c(ij) of decagonal Al-Ni-Co were determined using resonant ultrasound spectroscopy at selected fixed temperatures in the range between 5 and 290 K. Decagonal Al-Ni-Co is found to be transversely elastically isotropic to (0.02 +/- 0.04)%. The elastic moduli c(ij) (T) exhibit weak temperature dependences. The elastic Debye temperature Theta(D)(el) calculated from c(ij) measured at 5 K agrees well with the thermodynamic Debye temperature Theta(D)(th) obtained from a low-temperature specific-heat experiment.