Lattice thermal conductivity of nanograined half-Heusler solid solutions

2014 ◽  
Vol 104 (20) ◽  
pp. 202104 ◽  
Author(s):  
Huiyuan Geng ◽  
Xianfu Meng ◽  
Hao Zhang ◽  
Jian Zhang
Keyword(s):  
Thermal Conductivity ◽  
Solid Solutions ◽  
Lattice Thermal Conductivity

Thermoelectric Properties of K2Bi8−xSbxSe13Solid Solutions and Se Doping

2001 ◽  
Vol 691 ◽  
Author(s):  
Theodora Kyratsi ◽  
Jeffrey S. Dyck ◽  
Wei Chen ◽  
Duck-Young Chung ◽  
Ctirad Uher ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Charge Transport ◽  
Transport Properties ◽  
Thermoelectric Properties ◽  
Solid Solutions ◽  
Figure Of Merit ◽  
Lattice Thermal Conductivity ◽  
Se Doping ◽  
Mass Fluctuation ◽  
Thermal Conductivities

ABSTRACTOur efforts to improve the thermoelectric properties of β-K2Bi8Se13, led to systematic studies of solid solutions of the type β-K2Bi8−xSbxSe13. The charge transport properties and thermal conductivities were studied for selected members of the series. Lattice thermal conductivity decreases due to the mass fluctuation generated in the lattice by the mixed occupation of Sb and Bi atoms. Se excess as a dopant was found to increase the figure-of merit of the solid solutions.

Strain-induced suppression of the miscibility gap in nanostructured Mg2Si–Mg2Sn solid solutions

2018 ◽  
Vol 6 (36) ◽  
pp. 17559-17570 ◽  
Author(s):  
Su-in Yi ◽  
Vahid Attari ◽  
Myunghwan Jeong ◽  
Jie Jian ◽  
Sichuang Xue ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Solid Solutions ◽  
Lattice Thermal Conductivity ◽  
Miscibility Gap

Strain-induced suppression of the miscibility gap in solid solutions of Mg2Si and Mg2Sn was studied to reduce lattice thermal conductivity.

Vacancy scattering for enhancing the thermoelectric performance of CuGaTe2 solid solutions

2016 ◽  
Vol 4 (40) ◽  
pp. 15464-15470 ◽  
Author(s):  
Jiawen Shen ◽  
Xinyue Zhang ◽  
Siqi Lin ◽  
Juan Li ◽  
Zhiwei Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Solid Solutions ◽  
Lattice Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Substitutional Defects

Vacancies scatter phonons more effectively than substitutional defects, leading to a stronger reduction in the lattice thermal conductivity of thermoelectric CuGaTe2.

Lattice thermal conductivity of K2(Bi1−zSbz)8Se13 solid solutions

2004 ◽  
Vol 95 (8) ◽  
pp. 4140-4146 ◽  
Author(s):  
Theodora Kyratsi ◽  
Evripides Hatzikraniotis ◽  
M. Paraskevopoulous ◽  
Jeffrey S. Dyck ◽  
H. K. Shin ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Solid Solutions ◽  
Lattice Thermal Conductivity

A New Class of Materials with Promising Thermoelectric Properties: MNiSn (M = Ti, Zr, Hf)

1997 ◽  
Vol 478 ◽  
Author(s):  
H. Hohl ◽  
A. P. Ramirez ◽  
W. Kaefer ◽  
K. Fess ◽  
Ch. Thurner ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Intermetallic Compounds ◽  
Thermoelectric Properties ◽  
Solid Solutions ◽  
High Power ◽  
Figure Of Merit ◽  
Lattice Thermal Conductivity ◽  
Type Structure ◽  
New Class ◽  
End Members

AbstractTiNiSn, ZrNiSn and HfNiSn are members of a large group of intermetallic compounds which crystallize in the cubic MgAgAs-type structure. Polycrystalline samples of these compounds have been prepared and investigated for their thermoelectric properties. With thermopowers of about –200 μV/K and resistivities of a few mΩcm, power factors S2/ρ as high as 38 μW/K2 cm were obtained at 700 K. These remarkably high power factors are, however, accompanied by a thermal conductivity which is too high for applications. In order to reduce the parasitic lattice thermal conductivity, solid solutions Zrl−xHfxNiSn, Zrl−xTixNiSn, and Hfl−xTixNiSn were formed. The figure of merit of Zr0.5Hf0.5NiSn at 700 K (ZT = 0.41) exceeds the end members ZrNiSn (ZT = 0.26) and HfNiSn (ZT = 0.22).

scholarly journals Composition and pressure dependence of lattice thermal conductivity of (Mg,Fe)O solid solutions

2019 ◽  
Vol 351 (2-3) ◽  
pp. 229-235 ◽  
Author(s):  
Akira Hasegawa ◽  
Kenji Ohta ◽  
Takashi Yagi ◽  
Kei Hirose ◽  
Yoshiyuki Okuda ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Solid Solutions ◽  
Pressure Dependence ◽  
Lattice Thermal Conductivity
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