Low-Temperature Thermal Conductivity of Plastically Deformed Niobium and Tantalum Single Crystals of [001]Orientation

1991 ◽  
Vol 128 (1) ◽  
pp. 55-68 ◽  
Author(s):  
W. Wasserbäch
Keyword(s):  
Thermal Conductivity ◽  
Low Temperature ◽  
Single Crystals

Low-Temperature Thermal Conductivity of Rubrene Single Crystals: Quantitative Estimation of Defect Density in Bulk and Film Crystals

2009 ◽  
Vol 1154 ◽  
Author(s):  
Yugo Okada ◽  
M. Uno ◽  
Jun Takeya
Keyword(s):  
Thermal Conductivity ◽  
Low Temperature ◽  
Temperature Profile ◽  
Single Crystals ◽  
Gas Phase ◽  
Defect Density ◽  
Quantitative Estimation ◽  
Crystalline Defects ◽  
Growth Methods ◽  
Pronounced Peak

AbstractThermal conductivity of rubrene single crystals is measured for both bulk and film-like crystals down to 0.5 K in order to estimate quantitatively density of crystalline defects through their phonon mean free paths. The temperature profile of the bulk rubrene crystals exhibit pronounced peak at ∼ 10 K in the thermal conductivity as the result of very long mean-free paths of their phonons which indicates extremely low-level defect density in the region of 1015-1016 cm−3 depending on different growth methods. The crystals grown from gas phase tend to have less defects than those grown from solution. It turned out that the film-like crystals have a few times more defect density as the result of the measurement by using newly developed devices for minute crystals.

LOW TEMPERATURE THERMAL CONDUCTIVITY OF HgI2 SINGLE CRYSTALS

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-265-C6-267
Author(s):  
A. M. De Goër ◽  
M. Locatelli ◽  
I. F. Nicolau
Keyword(s):  
Thermal Conductivity ◽  
Low Temperature ◽  
Single Crystals
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