Ba6−3x Nd8+2x Ti18O54 Tungsten Bronze: A New High-Temperature n-Type Oxide Thermoelectric
02 engineering and technology
Molecular dynamics
530
01 natural sciences
Modelling
Titanate
[CHIM] Chemical Sciences
0103 physical sciences
[CHIM.CRIS]Chemical Sciences/Cristallography
Materials Chemistry
[CHIM]Chemical Sciences
[CHIM.CRIS] Chemical Sciences/Cristallography
Electrical and Electronic Engineering
[CHIM.MATE] Chemical Sciences/Material chemistry
Oxide ceramic
Thermoelectric
[CHIM.MATE]Chemical Sciences/Material chemistry
540
Condensed Matter Physics
16. Peace & justice
Electronic, Optical and Magnetic Materials
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry
[CHIM.THEO] Chemical Sciences/Theoretical and/or physical chemistry
TA
Thermal conductivity
Tungsten bronze
0210 nano-technology
DOI:
10.1007/s11664-015-4275-6
Publication Date:
2015-12-30T09:40:18Z
AUTHORS (24)
ABSTRACT
Semiconducting Ba6−3x Nd8+2x Ti18O54 ceramics (with x = 0.00 to 0.85) were synthesized by the mixed oxide route followed annealing in a reducing atmosphere; their high-temperature thermoelectric properties have been investigated. In conjunction with experimental observations, atomistic simulations performed investigate anisotropic behavior of lattice thermal conductivity. The show promising n-type relatively high Seebeck coefficient, moderate electrical conductivity, and temperature-stable, low conductivity; For example, composition 0.27 (i.e., Ba5.19Nd8.54Ti18O54) exhibited coefficient S 1000K 210 µV/K, conductivity σ 60 S/cm, k 1.45 W/(m K), leading ZT value 0.16 at 1000 K.
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