منابع مشابه
Thermoelectricity of EuCu 2 ð Ge 1 x Si x Þ 2 intermetallics
The evolution of the thermopower SðTÞ of EuCu2ðGe1 xSixÞ2 intermetallics, which is induced by the Si–Ge substitution, is explained by the Kondo scattering of conduction electrons on the Eu ions which fluctuate between the magnetic 2+ and non-magnetic 3+ Hund’s rule configurations. The Si–Ge substitution is equivalent to chemical pressure which modifies the coupling and the relative occupation o...
متن کاملLow-Dimensional Thermoelectricity
Thermoelectric materials are used as solid-state heat pumps and as power generators. The low efficiency of devices based on conventional bulk thermoelectric materials confines their applications to niches in which their advantages in compactness and controllability outweigh that drawback. Recent developments in nanotechnologies have led to the development of thermoelectric nano-materials with d...
متن کاملThermoelectricity in Cnfined Liquid Electrolytes
The electric field in an extended phase of a liquid electrolyte exposed to a temperature gradient is attributed to different thermophoretic mobilities of the ion species. As shown herein, such Soret-type ion thermodiffusion is not required to induce thermoelectricity even in the simplest electrolyte if it is confined between charged walls. The space charge of the electric double layer leads to ...
متن کاملRevisiting some chalcogenides for thermoelectricity.
Thermoelectric materials that are efficient well above ambient temperature are needed to convert waste-heat into electricity. Many thermoelectric oxides were investigated for this purpose, but their power factor (PF) values were too small (∼10-4 W m-1 K-2) to yield a satisfactory figure of merit zT. Changing the anions from O2- to S2- and then to Se2- is a way to increase the covalency. In this...
متن کاملMagnesium - rich Intermetallics RE
The magnesium-rich intermetallic phases RE3RuMg7 (RE = Y, Nd, Dy, Ho) have been synthesized from the elements in sealed niobium ampoules and subsequently characterized by powder X-ray diffraction. The structure of the dysprosium compound was refined on the basis of single-crystal X-ray diffractometer data: Ti6Sn5 type, P63/mmc, a = 1019.1(2), c = 606.76(9) pm, wR2 = 0.0159, 439 F2 values, 19 va...
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 2006
ISSN: 0921-4526
DOI: 10.1016/j.physb.2006.01.448