scholarly journals Anisotropic thermal conductivity in single crystal β-gallium oxide

2015 ◽  
Vol 106 (11) ◽  
pp. 111909 ◽  
Author(s):  
Zhi Guo ◽  
Amit Verma ◽  
Xufei Wu ◽  
Fangyuan Sun ◽  
Austin Hickman ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Single Crystal ◽  
Gallium Oxide ◽  
Anisotropic Thermal Conductivity

scholarly journals Record-Low and Anisotropic Thermal Conductivity of a Quasi-One-Dimensional Bulk ZrTe5 Single Crystal

2018 ◽  
Vol 10 (47) ◽  
pp. 40740-40747 ◽  
Author(s):  
Jie Zhu ◽  
Tianli Feng ◽  
Scott Mills ◽  
Peipei Wang ◽  
Xuewang Wu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Single Crystal ◽  
One Dimensional ◽  
Anisotropic Thermal Conductivity

Structure and Thermoelectric Properties of New Quaternary Tin and Lead Bismuth Selenides, K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1+xSn5-xBi11+xSe22

2000 ◽  
Vol 626 ◽  
Author(s):  
Antje Mrotzek ◽  
Kyoung-Shin Choi ◽  
Duck-Young Chung ◽  
Melissa A. Lane ◽  
John R. Ireland ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Single Crystal ◽  
Thermoelectric Properties ◽  
Three Dimensional ◽  
Structure Type ◽  
Narrow Gap ◽  
Low Thermal Conductivity ◽  
Seebeck Coefficients ◽  
Metal Atoms ◽  
Anionic Framework

ABSTRACTWe present the structure and thermoelectric properties of the new quaternary selenides K1+xM4–2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22. The compounds K1+xM4-2xBi7+xSe15 (M= Sn, Pb) crystallize isostructural to A1+xPb4-2xSb7+xSe15 with A = K, Rb, while K1-xSn5-xBi11+xSe22 reveals a new structure type. In both structure types fragments of the Bi2Te3-type and the NaCl-type are connected to a three-dimensional anionic framework with K+ ions filled tunnels. The two structures vary by the size of the NaCl-type rods and are closely related to β-K2Bi8Se13 and K2.5Bi8.5Se14. The thermoelectric properties of K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22 were explored on single crystal and ingot samples. These compounds are narrow gap semiconductors and show n-type behavior with moderate Seebeck coefficients. They have very low thermal conductivity due to an extensive disorder of the metal atoms and possible “rattling” K+ ions.

REVEALING THE ANISOTROPIC THERMAL CONDUCTIVITY USING TIME-RESOLVED MAGNETO-OPTICAL KERR EFFECT

2018 ◽  
Author(s):  
Jie Zhu ◽  
Dustin M. Lattery ◽  
Junyang Chen ◽  
DeLin Zhang ◽  
Xiaokun Gu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Kerr Effect ◽  
Optical Kerr Effect ◽  
Time Resolved ◽  
Anisotropic Thermal Conductivity ◽  
Magneto Optical Kerr Effect

HIGH THERMAL CONDUCTIVITY OF BULK GAN SINGLE CRYSTAL: AN ACCURATE EXPERIMENTAL DETERMINATION

2020 ◽  
Vol 112 (1-2(7)) ◽  
pp. 112-113
Author(s):  
A. V. INYUSHKIN ◽  
A. N. TALDENKOV ◽  
D. A. CHERNODUBOV ◽  
V. V. VORONENKOV ◽  
YU. G. SHRETER
Keyword(s):  
Thermal Conductivity ◽  
Single Crystal ◽  
Experimental Determination ◽  
High Thermal Conductivity ◽  
Bulk Gan

Influence of diamond wire saw slicing parameters on (010) lattice plane beta-gallium oxide single crystal wafer

2021 ◽  
Vol 133 ◽  
pp. 105939
Author(s):  
Pengcheng Gao ◽  
Baimei Tan ◽  
Fan Yang ◽  
Hui Li ◽  
Na Bian ◽  
...  
Keyword(s):  
Single Crystal ◽  
Gallium Oxide ◽  
Lattice Plane ◽  
Diamond Wire ◽  
Wire Saw ◽  
Diamond Wire Saw ◽  
Crystal Wafer

Experimental study of the anisotropic thermal conductivity of 2D carbon-fiber/epoxy woven composites

2021 ◽  
Vol 267 ◽  
pp. 113870
Author(s):  
Hu Zhang ◽  
Kefan Wu ◽  
Guangming Xiao ◽  
Yanxia Du ◽  
Guihua Tang
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Carbon Fiber ◽  
Woven Composites ◽  
Anisotropic Thermal Conductivity ◽  
Carbon Fiber Epoxy

Anisotropic Thermal Conductivity of Nanoporous Silica Film

2004 ◽  
Vol 51 (1) ◽  
pp. 20-27 ◽  
Author(s):  
B.-Y. Tsui ◽  
C.-C. Yang ◽  
K.-L. Fang
Keyword(s):  
Thermal Conductivity ◽  
Silica Film ◽  
Nanoporous Silica ◽  
Anisotropic Thermal Conductivity

Thermal conductivity of isotopically modified single crystal diamond

1993 ◽  
Vol 70 (24) ◽  
pp. 3764-3767 ◽  
Author(s):  
Lanhua Wei ◽  
P. K. Kuo ◽  
R. L. Thomas ◽  
T. R. Anthony ◽  
W. F. Banholzer
Keyword(s):  
Thermal Conductivity ◽  
Single Crystal ◽  
Single Crystal Diamond

scholarly journals Polycrystalline SnSe with a thermoelectric figure of merit greater than the single crystal

2021 ◽  
Author(s):  
Chongjian Zhou ◽  
Yong Kyu Lee ◽  
Yuan Yu ◽  
Sejin Byun ◽  
Zhong-Zhen Luo ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Single Crystal ◽  
High Performance ◽  
Figure Of Merit ◽  
Waste Heat ◽  
Electric Energy ◽  
Cost Effective ◽  
Tin Selenide ◽  
Tin Oxides ◽  
Thermally Conductive

AbstractThermoelectric materials generate electric energy from waste heat, with conversion efficiency governed by the dimensionless figure of merit, ZT. Single-crystal tin selenide (SnSe) was discovered to exhibit a high ZT of roughly 2.2–2.6 at 913 K, but more practical and deployable polycrystal versions of the same compound suffer from much poorer overall ZT, thereby thwarting prospects for cost-effective lead-free thermoelectrics. The poor polycrystal bulk performance is attributed to traces of tin oxides covering the surface of SnSe powders, which increases thermal conductivity, reduces electrical conductivity and thereby reduces ZT. Here, we report that hole-doped SnSe polycrystalline samples with reagents carefully purified and tin oxides removed exhibit an ZT of roughly 3.1 at 783 K. Its lattice thermal conductivity is ultralow at roughly 0.07 W m–1 K–1 at 783 K, lower than the single crystals. The path to ultrahigh thermoelectric performance in polycrystalline samples is the proper removal of the deleterious thermally conductive oxides from the surface of SnSe grains. These results could open an era of high-performance practical thermoelectrics from this high-performance material.

Sign in / Sign up

Export Citation Format

Share Document