Thermoelectric Power and Electron Scattering in Metal Alloys

1954 ◽  
Vol 95 (5) ◽  
pp. 1134-1142 ◽  
Author(s):  
C. A. Domenicali ◽  
F. A. Otter
Keyword(s):  
Thermoelectric Power ◽  
Electron Scattering ◽  
Metal Alloys

The thermopower of NiCr- and PtRh-alloys – a new view

2019 ◽  
Vol 86 (5) ◽  
pp. 278-284
Author(s):  
Klaus Bärner ◽  
Wladimir Morsakov ◽  
Klaus Irrgang
Keyword(s):  
Thermoelectric Power ◽  
Electron Correlation ◽  
Electronic States ◽  
Metal Alloys ◽  
Spin Moment ◽  
Fermi Theory ◽  
Transition Metal Alloys ◽  
Correlated Electron ◽  
New Interpretation ◽  
Correlation Term

AbstractFor the interpretation of the Seebeck coefficient S(T) of transition metal alloys where one or both of the alloy partners develop a spin moment, so far spincluster models in connection with the standard Boltzmann-Fermi theory S(T)\sim T have been adopted. However, this interpretation suffers from some obvious inconsistencies, in particular with NiCr-alloys. In this contribution we try to alleviate these inconsistencies by implementing the recently proposed correlated electron thermopower terms which appear in the framework of Fermi-Boltzmann statistics when it is applied to Stoner-Slater intraatomic exchange (J) split electronic states. For both NiCr- and PtRh-alloys we recover the typical electron correlation term of the thermoelectric power, {S_{D}}, while former inconsistencies can be removed. As NiCr and PtRh-alloys are often used in high temperature sensing because of their stability, this new interpretation of the thermoelectric power may help to develop a better calibration and compositional choice of alloy-based thermocouples.

THE LOW-TEMPERATURE THERMAL CONDUCTIVITY, ELECTRICAL RESISTIVITY, AND THERMOELECTRIC POWER OF DILUTE SILVER ALLOYS WITH MANGANESE

1966 ◽  
Vol 44 (10) ◽  
pp. 2293-2302 ◽  
Author(s):  
H. L. Malm ◽  
S. B. Woods
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Low Temperature ◽  
Thermoelectric Power ◽  
Electron Scattering ◽  
The Other ◽  
Temperature Measurements ◽  
Silver Alloys ◽  
Temperature Range ◽  
Dilute Alloy

Low-temperature measurements of electrical resistivity, thermal conductivity, and thermoelectric power on silver alloys containing 0.005, 0.067, 0.11, and 0.31 at.% of manganese are reported. The same specimens were used for the measurement of all properties over the temperature range from 2 to 25 °K. The well-known minimum and maximum are observed in the electrical resistivity of the three more concentrated alloys and the minimum is visible in the most dilute alloy near the lowest temperatures of measurement. Associated effects are observed in the other properties and their possible relationship to theoretical electron scattering mechanisms, particularly that of Kondo, is discussed.

The transport properties of rubidium, and electron–electron scattering

1979 ◽  
Vol 57 (6) ◽  
pp. 871-883 ◽  
Author(s):  
J.G. Cook
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Transport Properties ◽  
Thermoelectric Power ◽  
Electron Scattering ◽  
Strong Evidence ◽  
Freezing Point ◽  
Thermal Contraction ◽  
Thomas Fermi

The electrical resistivity, thermal conductivity, and thermoelectric power of Rb have been measured between 40 and 300 K. Two of the samples were bare, to avoid thermal contraction difficulties; the softness of these samples necessitated further, calibration, measurements on a third sample in glass, just below the freezing point. The electrical resistivity values agree well with published values of Dugdale and Phillips. The Lorenz function, not previously examined in detail above 25 K, shows strong evidence of electron–electron scattering, of a strength intermediate to that calculated by Kukkonen for Thomas–Fermi screening, and for Geldart–Taylor screening. Such scattering appears to have affected the thermoelectric power as well.

The Effect of Alloying on the Fermi Surface of Copper. II. Electron-scattering and Neck Cross Sections with Dilute Heterovalent and Transition Metal Solutes

1971 ◽  
Vol 49 (19) ◽  
pp. 2449-2461 ◽  
Author(s):  
P. T. Coleridge ◽  
I. M. Templeton
Keyword(s):  
Transition Metal ◽  
Fermi Surface ◽  
Electron Scattering ◽  
Cross Sections ◽  
Kondo Effect ◽  
Metal Alloys ◽  
Neck Size ◽  
Transition Metal Alloys ◽  
Scattering Anisotropy ◽  
Scattering Cross Sections

The Fermi surface neck size and the scattering cross sections for the neck and [Formula: see text] belly orbits have been measured in dilute alloys of Zn, Al, Ge, Si, Ni, Co, Fe, Mn, and Cr in Cu. Earlier observations of rigid-band behavior for the neck size in Cu(Zn) and Cu(Al), while essentially substantiated by the present measurements, are now believed to be fortuitous; Cu(Ge) and Cu(Si) do not agree with a rigid-band prediction. The changes (generally reductions) of neck size in the transition metal alloys do not appear to be related directly to changes of electron concentration. The scattering anisotropy is rather small in the heterovalent alloys, the scattering being somewhat greater on the necks, but is large and in the opposite sense in the transition metal alloys. The magnitude and anisotropy of scattering is interpreted in terms of phase shifts associated with the impurities and the wave functions over the Fermi surface. There is evidence for additional scattering anisotropy in alloys exhibiting the Kondo effect.

Thermoelectric power of gold-alkali metal alloys

1977 ◽  
Vol 18 (2) ◽  
pp. 41-44
Author(s):  
L. L. Kiang ◽  
T. L. Liu
Keyword(s):  
Alkali Metal ◽  
Thermoelectric Power ◽  
Metal Alloys
Sign in / Sign up

Export Citation Format

Share Document