Disorder scattering effect on the high-temperature lattice thermal conductivity of TiCoSb-based half-Heusler compounds

2005 ◽  
Vol 98 (1) ◽  
pp. 013708 ◽  
Author(s):  
Min Zhou ◽  
Lidong Chen ◽  
Wenqing Zhang ◽  
Chude Feng
Keyword(s):  
Thermal Conductivity ◽  
High Temperature ◽  
Lattice Thermal Conductivity ◽  
Heusler Compounds ◽  
Scattering Effect ◽  
Temperature Lattice ◽  
Disorder Scattering

High-temperature thermoelectric properties of n-type BayNixCo4−xSb12

2001 ◽  
Vol 16 (12) ◽  
pp. 3343-3346 ◽  
Author(s):  
X. F. Tang ◽  
L. M. Zhang ◽  
R. Z. Yuan ◽  
L. D. Chen ◽  
T. Goto ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
High Temperature ◽  
Seebeck Coefficient ◽  
Thermoelectric Properties ◽  
Electron Concentration ◽  
Lattice Thermal Conductivity ◽  
Filling Fraction ◽  
Ni Content ◽  
Increasing Temperature

Effects of Ba filling fraction and Ni content on the thermoelectric properties of n-type BayNixCo4−xSb12 (x = 0−0.1, y = 0−0.4) were investigated at temperature range of 300 to 900 K. Thermal conductivity decreased with increasing Ba filling fraction and temperature. When y was fixed at 0.3, thermal conductivity decreased with increasing Ni content and reached a minimum value at about x = 0.05. Lattice thermal conductivity decreased with increasing Ni content, monotonously (y ≤ 0.1). Electron concentration and electrical conductivity increased with increasing Ba filling fraction and Ni content. Seebeck coefficient increased with increasing temperature and decreased with increasing Ba filling fraction and Ni content. The maximum ZT value of 1.25 was obtained at about 900 K for n-type Ba0.3Ni0.05Co3.95Sb12.

Effect of Ho Doping on the High-Temperature Thermoelectric Properties of Ca3Co4O9-Based Oxides

2011 ◽  
Vol 228-229 ◽  
pp. 947-950
Author(s):  
Tao Zhu ◽  
Jun Min Zhou
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Thermoelectric Properties ◽  
Lattice Thermal Conductivity ◽  
Solid Reaction

Ca3-xHoxCo4O9 (x=0.0, 0.15, 0.3, 0.45) samples were prepared using solid reaction and the effect of Ho doping on their high thermoelectric properties were investigated. The substitution of Ho for Ca resulted in an increase of both thermopower and electrical resistivity which could be attributed to the decrease of hole concentrations. The Ho-doped samples had lower thermal conductivity than Ca3Co4O9 due to their lower electronic and lattice thermal conductivity. The largest ZT values were attained in Ca2.7Ho0.3Co4O9 sample.

Realizing both n- and p-types of high thermoelectric performance in Fe1−xNixTiSb half-Heusler compounds

2020 ◽  
Vol 8 (9) ◽  
pp. 3156-3164
Author(s):  
Nanhai Li ◽  
Huaxing Zhu ◽  
Wenlu He ◽  
Bing Zhang ◽  
Wenjun Cui ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Random Distribution ◽  
Lattice Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Heusler Compounds ◽  
Quality Factors ◽  
High Quality

The random distribution of Fe/Ni atoms in Fe1−xNixTiSb, which leads to low lattice thermal conductivity and thus high quality factors.

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