Reference Correlations for the Thermal Conductivity of …
Reference Correlations for the Thermal Conductivity of Liquid Bismuth, Cobalt, Germanium, and Silicon M. J. Assaela) Chemical Engineering Department, Aristotle University, Thessaloniki 54636, Greece
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[PDF] Thermal conductivity of germanium crystals with …
DOI: 10.1103/PHYSREVB.56.9431 Corpus ID: 54864152; Thermal conductivity of germanium crystals with different isotopic compositions @article{AsenPalmer1997ThermalCO, title={Thermal conductivity of germanium crystals with different isotopic compositions}, author={M. Asen-Palmer and K. Bartkowski and Eberhard Gmelin and Manuel Cardona and Arkadii P. …
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Thermal Conductivity of Germanium-, Silicon-, and Carbon …
We present a model calculation of the lattice thermal conductivity of germanium nitride, silicon nitride, and carbon nitride in various structural modifications and in a temperature range where intrinsic phonon scattering is dominant. The applicability of this model has been demonstrated by its successful prediction of the thermal conductivity of over forty different crystalline elements …
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Tailoring thermal conductivity of silicon/germanium …
In this work, we investigate the influence of the core-shell architecture on nanowire (1D) thermal conductivity and evaluate its validity as a strategy to achieve a better thermoelectric performance. To obtain the thermal conductivity values, equilibrium molecular dynamics simulations are conducted for core-shell nanowires of silicon and germanium.
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Thermal conductivity of group IV elemental semiconductors
The thermal conductivity of group IV elements—germanium, silicon, and diamond—is described in order to demonstrate various important and interesting aspects of the mechanism of phonon heat transfer in single-crystalline semiconductors and dielectrics.
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MIT Open Access Articles
Experimental Investigation of Size Effects on the Thermal Conductivity of Silicon-Germanium Alloy Thin Films Ramez Cheaito,1 John C. Duda,1,2 Thomas E. Beechem,2 Khalid Hattar,2 Jon F. Ihlefeld,2 Douglas L. Medlin,3 Mark A. Rodriguez,2 Michael J. Campion,2,4 Edward S. Piekos,2 and Patrick E. Hopkins1,* 1Department of Mechanical and Aerospace Engineering, University …
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Thermal conductivity of silicon, germanium, and silicon …
364 I-> z0 U 2I I Figure 2. Thermal conductivity for a variety of silicon samples. (From ref 11). At this point it is interesting to note that the isotopic purity of silicon and germanium (also ...
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The thermal conductivity of germanium and silicon
This paper reports measurements of the thermal conductivity, K, of highly purified crystals of germanium and silicon to which varying amounts of impurity atoms have been added. The …
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Properties of Silicon (Si), Germanium (Ge), and Gallium …
Thermal Conductivity at 300 K (W/cm-degC) 1.5: 0.6: 0.46: Thermal Diffusivity (cm 2 /sec) 0.9: 0.36: 0.24: Vapor Pressure (Pa) 1 at 1650 deg C; 10-6 at 900 deg C: 1 at 1330 deg C; 10-6 at 760 deg C: 100 at 1050 deg C; 1 at 900 deg C . LINKS: What ...
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Thermal conductivity of fivefold twinned silicon-germanium
The thermal transport properties of five-fold twinned (5FT) germanium–silicon (Ge–Si) heteronanowires (h-NWs) with varying cross-sectional areas, germanium (Ge) domain ratios and heterostructural patterns are investigated using homogeneous nonequilibrium molecular dynamics (HNEMD) simulations. The results de
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Impacts of Atomistic Coating on Thermal Conductivity of Germanium
By using nonequilibrium molecular dynamics simulations, we demonstrated that thermal conductivity of germanium nanowires can be reduced more than 25% at room temperature by atomistic coating. There is a critical coating thickness beyond which thermal conductivity of the coated nanowire is larger than that of the host nanowire. The diameter …
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Tunable Thermal Conductivity of Silicene by Germanium …
Silicene possesses excellent electronic properties and low thermal conductivity and hence is a potential material for thermoelectric applications. The key to improve the thermoelectric efficiency of silicene relies on opening a bandgap to enhance the thermopower and suppressing the lattice thermal conductivity. Based on first-principle calculations, we propose germanium …
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Thermal conductivity of silicon, germanium, III–V …
Room temperature thermal conductivity of Ge, Si and III-V compounds (undoped) Material Thermal conductivity (300, W/cm-deg) Silicon Aluminum phosphide Gallium phosphide Indium phosphide Aluminum antimonide Germanium Gallium arsenide Gallium antimonide Indium arsenide Indium antimonide Aluminum arsenide 1.45 0.05 0.9 0.77 0.68 0.57 0.55 + 0.03 0 ...
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Germanium
Thermal conductivity of Germanium is 59.9 W/(m·K). The heat transfer characteristics of a solid material are measured by a property called the thermal conductivity, k (or λ), measured in W/m.K. It is a measure of a substance's ability to …
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NSM Archive
Si 1-x Ge x (alloys). Specific heat vs. temperature. 0.25 < x < 0.85 Inset shows the same dependences in the temperature range from 0 to 50 K. Wang & Zheng .: Si 1-x Ge x.Thermal expansion coefficient vs. composition x at 300 K Zhdanova et al. . Si 1-x Ge x (alloys). Thermal expansion coefficient vs. temperature.
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Properties of Silicon (Si), Germanium (Ge), and Gallium …
Linear Coefficient of Thermal Expansion, ΔL/L/ΔT (1/deg C) 2.6 x 10-6: 5.8 x 10-6: 6.86 x 10-6: Melting Point (deg C) 1415: 937: 1238: Minority Carrier Lifetime (s) 2.5 ... Thermal Conductivity …
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Thermal Conductivity of Silicon and Germanium from …
The thermal conductivity K of single crystals of silicon has been measured from 3 to 1580°K and of single crystals of germanium from 3 to 1190°K.
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Isotope effect in the thermal conductivity of …
The thermal conductivity of chemically, structurally, and isotopically highly pure germanium single crystals is investigated experimentally in the temperature range from 2 to 300 K. It is found that the thermal conductivity of germanium enriched to 99.99% 70Ge is 8 times higher at the maximum than the thermal conductivity of germanium with the
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Thermal properties of Germanium (Ge)
The dependences of thermal conductivity versus doping level. p-Ge. T o (K): 1. 20; 2. 50; 3. 100; 4. 200. (Okhotin et al. [1972]). Temperature dependence of specific heat at constant pressure. (Piesbergen et al. [1963]). Temperature dependence of specific heat (high temperatures). ...
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Thermal conductivity of germanium in the temperature …
Total electronic thermal conductivity in n-type germanium as a function of temperature. The dashed line has been computed from equation (1). SESSION M: THERMAL CONDUCTION AND THERMOMAGNETIC EFFECTS 343 CANNON for preparation of the high temperature con- tacts to the germanium crystals and R. J. MOEHS for construction of the equipment. REFERENCES 1.
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Thermal conductivity of rutile germanium dioxide
Power electronics seek to improve power conversion of devices by utilizing materials with a wide bandgap, high carrier mobility, and high thermal conductivity. Due to its wide bandgap of 4.5 eV, b-Ga 2 O 3 has received much attention for high-voltage
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Enhancing the thermal conductivity of semiconductor thin …
Fig. 1: Enhancement in cross-plane thermal conductivity of germanium thin films by decreasing the period, P, of the nanoscale heat baths.
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Ultralow thermal conductivity of amorphous …
The ultralow thermal conductivity (1.3 W/(m∙K)) of amorphous silicon–germanium films for alloy and disorder scattering was investigated using the 3ω method and nanoindentation. The films exhibited the lowest phonon mean free path (MFP) of 0.5 nm compared to …
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Thermal conductivity and its anisotropy research of …
Germanium thermal conductivity mainly depends on the lattice vibration. In thin film, the lattice vibration and heat conduction are greatly influenced by the thin film boundary scattering. The surface's structure is remarkably different from it in body, and the atomic bond disconnects to be
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Reference Correlations for the Thermal Conductivity of …
The available experimental data for the thermal conductivity of liquid bismuth, cobalt, germanium, and silicon have been critically examined with the intention of establishing thermal conductivity …
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Germanium – Thermal Conductivity
Thermal conductivity of Germanium is 59.9 W/ (m·K). The heat transfer characteristics of a solid material are measured by a property called the thermal conductivity, k …
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Pure silicon and germanium conductivities vs. temperature.
In this paper, we review the application of a recent formula for the lattice thermal conductivity to silicon and germanium, which are two of the most commonly used materials in electronic devices ...
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Thermal conductivity of germanium crystals with different …
We have measured the thermal conductivity of seven germanium crystals with different isotopic compositions in the temperature range between 2 K and 300 K.
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The thermal conductivity of germanium and silicon …
The thermal conductivity of the germanium single crystals plotted on a linear scale. Lattice conduction Earlier work has shown (Rosenberg 1954) that, at least below 90°K, heat conduction in high-purity germanium is by the lattice vibrations alone, and that
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Ultra-Low Thermal Conductivity of Germanium Nanowires
Abstract We theoretically investigate phonon and thermal properties in germanium nanowires with square cross-sections ranging from 2.26 to 27.72 nm. Using a face-centered cubic cell model for lattice vibrations and the Boltzmann transport equation approach, we find that the thermal conductivity of Ge nanowires is 3 to 20 times lower than in bulk c-Ge, depending on …
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