Thermomigration and Soret effect in NaxCoO2as thermoelectric material: Preparation and characterization of sodium cobaltate thin films (Phys. Status Solidi A 5/2016)
Thermomigration and Soret effect in NaxCoO2as thermoelectric material: Preparation and characterization of sodium cobaltate thin films (Phys. Status Solidi A 5/2016)
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NaxCoO2as 热电材料中的热迁移和 Soret 效应：钴酸钠薄膜的制备和表征（Phys Status Solidi A 5/2016）
DOI：
10.1002/pssa.201670631
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
J. Janek
中科院分区：
文献类型：
--
作者：
C. Schneider;P. Schichtel;B. Mogwitz;R. Straubinger;A. Beyer;M. Rohnke;K. Volz;J. Janek
热迁移（Ludwig-Soret效应）可以通过局部改变电荷载流子浓度并因此改变品质因数来显著影响热电材料的性质。Schneider et al.（第100页）1284-1295）通过施加平行于外延生长的Na x CoO 2的天然层状结构的温度梯度来处理逐渐形成的钠浓度梯度。自行设计的实验装置，使运输和化学扩散系数的热的评价。该结果代表了热电材料中Soret效应的一个非常罕见的例子。
Thermomigration (Ludwig-Soret effect) can significantly influence the properties of thermoelectric materials by locally changing the charge carrier concentrations and, therefore, the figure of merit. The study by Schneider et al.(pp. 1284–1295) deals with evolving sodium concentration gradients by applying a temperature gradient parallel to the natural layered structure of epitaxially grown Na x CoO 2. A self-designed experimental set-up enables both the evaluation of the heat of transport and the chemical diffusion coefficient. The results represent one of the very rare examples of the Soret effect in thermoelectric materials.