Results 191 to 200 of about 5,313 (240)

Accurate measurement of Seebeck coefficient

Review of Scientific Instruments, 2016
In this work, it was investigated how to measure Seebeck coefficient accurately. The offset voltages, between the specimen and measurement wires, might influence the results measured significantly and should be eliminated during measuring process. They do not depend on temperature difference but on temperature and include two parts: the intrinsic ...
Jian Liu, Yacui Zhang, Zhen Wang, Maokui Li, Wenbin Su, Minglei Zhao, Shengli Huang, Shengqing Xia, Chunlei Wang   +8 more
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Seebeck coefficient of K2SO4

Materials Research Bulletin, 1983
Abstract The thermopotential of the cell (SO 2 +O 2 ), Pt/K 2 SO 4 /Pt, (SO 2 +O 2 )′ was measured, and a Seebeck coefficient of 1.6 mV/°C was obtained. This value is higher than that of most salts that have been measured to date. The high Seebeck coefficient has implications in the use of the cell in SO 2 gas measurements.
C.Y. Lin, C. Hirayama
openaire   +1 more source

First-principles thermodynamic theory of Seebeck coefficients

Physical Review B, 2018
Thermoelectric effects, measured by the Seebeck coefficients, refer to the phenomena in which a temperature difference or gradient imposed across a thermoelectric material induces an electrical potential difference or gradient, and vice versa, enabling the direct conversion of thermal and electric energies.
Yi Wang, Yong-Jie Hu, Brandon Bocklund   +2 more
exaly   +4 more sources

The seebeck coefficient of YbAl2 and YbAl3

Physics Letters A, 1974
Abstract The absolute Seebeck coefficient of YbAl2, YbAl3, LuAl2 and LuAl3 has been measured at temperatures between 4 and 300 K. The results of the Yb compounds are in conformity with the proposed virtual bound state character of the Yb ground state.
H.J. van Daal, P.B. van Aken, K.H.J. Buschow   +2 more
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Seebeck Coefficient (Thermopower)

2007
Based on the idea that different temperatures generate different carrier densities and the resulting carrier diffusion causes the thermal electromotive force (emf), a new formula for the Seebeck coefficient (thermopower) S is obtained: \(S = (2\ln{2} /3)(qn)^{-1}\epsilon_{F}k_{B}({\cal N}_{0}/V)\), where q, n, \(\epsilon_{F}\), \({\cal N}_{0}\), and V ...
Shigeji Fujita, Kei Ito
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Effective Seebeck coefficient for semiconductors

Physical Review B, 2006
A distinction between two common definitions of Seebeck coefficient is clarified. The effective Seebeck coefficient, which describes the effective electric field induced by a temperature gradient, is found to be a constant for a homogeneous doped semiconductor regardless of its doping.
Jianwei Cai, G. D. Mahan
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Experimental setup for the Seebeck and Nernst coefficient measurements

Review of Scientific Instruments, 2020
A new experimental setup is designed for the measurement of Seebeck and Nernst coefficients on the single crystal flakes and polycrystalline samples. The setup utilizes the multifunctional probe assembly of the physical property measurement system by Quantum Design, Inc. and can measure in the temperature range of 1.8 K–380 K up to 8 T magnetic fields.
Shailja Sharma, C. S. Yadav
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Reference Material for Seebeck Coefficients

International Journal of Thermophysics, 2014
This paper describes a measurement method and a measuring system to determine absolute Seebeck coefficients of thermoelectric bulk materials with the aim of establishing reference materials for Seebeck coefficients. Reference materials with known thermoelectric properties are essential to allow a reliable benchmarking of different thermoelectric ...
F. Edler, E. Lenz, S. Haupt
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The effect of the band edges on the Seebeck coefficient

Journal of Physics: Condensed Matter, 2010
The classical thermopower formulae generally applied for the calculation of the Seebeck coefficient S are argued to be incomplete. S can be separated into two different contributions, a scattering term, S(0), and a thermodynamic term, ΔS, representing the additional change of the electrochemical potential μ with temperature T caused by 'non-scattering'
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Spin seebeck coefficient of a molecular spin pump

Physical Chemistry Chemical Physics, 2011
Within a generalized version of previously considered model of a molecular spin pump controlled by an external electric field [J. Fransson and M. Galperin, Phys. Rev. B, 2010, 81, 075311] we discuss thermal properties of such spintronic devices. The spin Seebeck coefficient of a molecular spin pump is introduced, and several possible definitions of a ...
Jonas, Fransson, Michael, Galperin
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