Thermoelectric power and electrical resistivity of Ce(In1-xSnx)3 and (Ce1-xLaxIn3

Sakurai, J.; Ohyama, Tatsushi; Komura, Y.

doi:10.1016/0304-8853(85)90291-4

Cited by 26 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3); the initial slope of S(T ) decreases continuously with Γ. Such a behavior is in a qualitative agreement with the thermopower data on valence fluctuators 16,17,18 and with the high-pressure data on CeRu 2 Ge 2 11 (cf. inset to Fig.…”

Section: Thermoelectric Power Resultssupporting

confidence: 89%

“…13,14,15,16 Finally, in some cases (type (d) systems) the thermopower grows monotonically towards the hightemperature maximum, and the low-temperature structure appears only as a shoulder on a broad peak, or is not resolved at all. 8,16,17,18 The clue to these various types of behavior comes from the high-pressure 2,11,19,20,21 and doping studies, 1,14,16,24,25,26,27,28 which show that the thermopower of Cerium compounds changes continuously from type (a) to type (d). A typical example is provided by the S(T ) of CeRu 2 Ge 2 , which is plotted in Fig.1 as a function of temperature, for various pressures.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions

2005

View full text Add to dashboard Cite

The thermoelectric properties of intermetallic compounds with Ce or Yb ions are explained by the single-impurity Anderson model which takes into account the crystal-field splitting of the 4f groundstate multiplet, and assumes a strong Coulomb repulsion which restricts the number of f electrons or f holes to n f ≤ 1 for Ce and n hole f ≤ 1 for Yb ions. Using the non-crossing approximation and imposing the charge neutrality constraint on the local scattering problem at each temperature and pressure, the excitation spectrum and the transport coefficients of the model are obtained. The thermopower calculated in such a way exhibits all the characteristic features observed in Ce and Yb intermetallics. Calculating the effect of pressure on various characteristic energy scales of the model, we obtain the (T, p) phase diagram which agrees with the experimental data on CeRu2Si2, CeCu2Si2, CePd2Si2, and similar compounds. The evolution of the thermopower and the electrical resistance as a function of temperature, pressure or doping is explained in terms of the crossovers between various fixed points of the model and the redistribution of the single-particle spectral weight within the Fermi window.

show abstract

Section: Thermoelectric Power Resultssupporting

confidence: 89%

mentioning

confidence: 99%

Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions

2005

View full text Add to dashboard Cite

show abstract

“…S still exhibits a positive peak at 120 K with the smaller magnitude, and maintains the minimum at 8 K. We recognize that the S behavior resembles that of Ce-based Kondo compounds. For instance, for a typical intermediate valence (IV) compound CeSn 3 , a single positive peak with the large amplitude of 45 V/K is observed at 160 K [11]. T K can be evaluated as about 200 K, according to theoretical models [12,13].…”

Section: Tep Behavior For Smti 2 Al 20mentioning

confidence: 99%

Thermoelectric Property of SmT₂Al₂₀ (T = Ti, V, and Cr) at Low Temperatures

Kuwai

Furuyama

Tada

et al. 2014

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)

View full text Add to dashboard Cite

Thermoelectric properties for cubic SmT 2 Al 20 (T = Ti, V and Cr) compounds with the  8 quartet ground state are presented. These compounds manifest a Kondo-type anomaly below room temperature in the electrical resistivity, and undergo a field-insensitive antiferromagnetic ordering at the Neel temperature T N = 6.5 K (T = Ti), 2.9 K (T = V) and 1.8 K (T = Cr). Furthermore, the emergence of the heavy electron state below T N is suggested by the observation of a large Sommerfeld coefficient  for the each compound. Our present study revealed that the thermoelectric power S shows a positive peak related to the Kondo effect at temperatures roughly above 100 K for T = Ti and V. S for T = Cr is similar to that of its La counterpart in the same temperature range, showing no clear Kondo anomaly. On the other hand, a negative peak in S is observed slightly above the respective T N. At lower temperatures, a positive peak appears for all the compounds. In addition, for T = V, a large S/T of 5 V/K 2 is attained in the zero-temperature limit, which is almost the same as that expected from the large  ~ 720 mJ/(mol K 2).

show abstract

“…In combination with metal-like large electrical conductivity, the enhanced Seebeck coefficient leads to the exceptionally high thermoelectric power factor of RE compounds at low temperatures. The highest Seebeck coefficient and thermoelectric power factor for metals are obtained in the compounds containing RE elements of Ce and Yb such as CeSn 3 ,32,33) CePd 3 , 34) YbPd35) and YbAl 3 36). This is because the 4 f electron can hybridize with the conduction electrons, particularly in Ce-and Yb-based metals, which explains the fact that most Ce and Yb-based compounds show an uncommonly large Seebeck coefficient compared with normal metals and other RE-based metals.…”

mentioning

confidence: 99%

Rare-earth silicides: the promising candidates for thermoelectric applications at near room temperature

Tanusilp

Kurosaki

2022

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Metal silicides are considered as promising candidates for thermoelectric applications thanks to the advantages of low toxicity, high stability. The most well-known silicides are Mg2Si which exhibit high thermoelectric efficiency (zT) at the temperature range of 600 to 800 K. Other conventional silicides such as FeSi2, CrSi2 Ru2Si3, and higher manganese silicide have their highest zT values at temperature higher than 800 K. However, there are limited known silicide-based thermoelectric materials operating at near room temperature. Here, we focused on rare-earth (RE) silicides, exhibiting special behaviors of heavy fermion or mixed valence. Such behaviors cause an uncommonly large Seebeck coefficient and thermoelectric power factor for a metal at low temperature, which are potential advantages for thermoelectric applications at low temperature. Thus, we will review several reports on RE silicides based thermoelectric materials and our recent work on Yb(Si1−xGex)2−δ, considered as a promising thermoelectric material at near room temperature.

show abstract

Thermoelectric power and electrical resistivity of Ce(In1-xSnx)3 and (Ce1-xLaxIn3

Cited by 26 publications

References 4 publications

Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions

Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions

Thermoelectric Property of SmT₂Al₂₀ (T = Ti, V, and Cr) at Low Temperatures

Rare-earth silicides: the promising candidates for thermoelectric applications at near room temperature

Contact Info

Product

Resources

About

Thermoelectric power and electrical resistivity of Ce(In1-xSnx)3 and (Ce1-xLaxIn3

Cited by 26 publications

References 4 publications

Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions

Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions

Thermoelectric Property of SmT2Al20 (T = Ti, V, and Cr) at Low Temperatures

Rare-earth silicides: the promising candidates for thermoelectric applications at near room temperature

Contact Info

Product

Resources

About

Thermoelectric Property of SmT₂Al₂₀ (T = Ti, V, and Cr) at Low Temperatures