TY - JOUR
T1 - Pressure tuning of the thermal conductivity of the layered muscovite crystal
AU - Hsieh, Wen Pin
AU - Chen, Bin
AU - Li, Jie
AU - Keblinski, Pawel
AU - Cahill, David G.
PY - 2009/11/20
Y1 - 2009/11/20
N2 - The physics of heat conduction in layered, anisotropic crystals is probed by measurements of the cross-plane elastic constant C33 and thermal conductivity Λ of muscovite mica as a function of hydrostatic pressure. Picosecond interferometry and time-domain thermoreflectance provide high-precision measurements of C33 and Λ, respectively, of micron-sized samples within a diamond-anvil cell; Λ changes from the anomalously low value of 0.46 W m-1 K-1 at ambient pressure to a value more typical of oxides crystals with large unit cells, 6.6 W m-1 K-1, at P=24 GPa. Most of the pressure dependence of Λ can be accounted for by the pressure dependence of the cross-plane sound velocities.
AB - The physics of heat conduction in layered, anisotropic crystals is probed by measurements of the cross-plane elastic constant C33 and thermal conductivity Λ of muscovite mica as a function of hydrostatic pressure. Picosecond interferometry and time-domain thermoreflectance provide high-precision measurements of C33 and Λ, respectively, of micron-sized samples within a diamond-anvil cell; Λ changes from the anomalously low value of 0.46 W m-1 K-1 at ambient pressure to a value more typical of oxides crystals with large unit cells, 6.6 W m-1 K-1, at P=24 GPa. Most of the pressure dependence of Λ can be accounted for by the pressure dependence of the cross-plane sound velocities.
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U2 - 10.1103/PhysRevB.80.180302
DO - 10.1103/PhysRevB.80.180302
M3 - Article
AN - SCOPUS:73649125519
SN - 1098-0121
VL - 80
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 18
M1 - 180302
ER -