Phonon focusing and phonon conduction in orthorhombic and tetragonal crystals in the boundary-scattering regime. II

1978 ◽  
Vol 18 (12) ◽  
pp. 6576-6605 ◽  
Author(s):  
C. G. Winternheimer ◽  
A. K. McCurdy
Keyword(s):  
Boundary Scattering ◽  
Tetragonal Crystals ◽  
Phonon Conduction ◽  
Phonon Focusing

Elastic anisotropy and phonon focusing for tetragonal crystals: Application to γ-TiAl

2016 ◽  
Vol 118 ◽  
pp. 117-123 ◽  
Author(s):  
Ping-Ying Tang ◽  
Guo-Hua Huang ◽  
Qing-Lian Xie ◽  
Jing-Li Huang ◽  
Feng Ning
Keyword(s):  
Elastic Anisotropy ◽  
Tetragonal Crystals ◽  
Phonon Focusing

scholarly journals Analysis of the Effect of Resonant Phonon Scattering on the Thermal Conductivity of CaF2

1976 ◽  
Vol 29 (2) ◽  
pp. 19 ◽  
Author(s):  
PRW Hudson ◽  
EE Gibbs
Keyword(s):  
Thermal Conductivity ◽  
Low Temperatures ◽  
Phonon Scattering ◽  
Low Frequency ◽  
Resonant Scattering ◽  
Boundary Scattering ◽  
Scattering Mechanism ◽  
Scattering Mechanisms ◽  
Phonon Conduction

An analysis is presented of the various phonon contributions to the thermal conductivity of CaF2 doped with 1�0% and 0�1 % of yttrium or thulium. The broad phonon resonant scattering term is found to reduce the low frequency phonon conduction significantly. This is responsible for the relatively stronger suppression of the conductivity at low temperatures in the phonon boundary scattering region. Thus broad quasilocalized phonon resonant scattering mechanisms have a similar effect to phonon precipitate scattering. It also follows that, in the case of a broad resonant scattering mechanism, a dip will not necessarily be seen in the conductivity.

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