Title of article
Thermoelectric properties and defect structure of La0.45Nd0.45Sr0.1FeO3−δ
Author/Authors
Kobayashi، نويسنده , , Kiyoshi and Yamaguchi، نويسنده , , Shu and Tsunoda، نويسنده , , Tatsuo and Imai، نويسنده , , Yoji، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2001
Pages
10
From page
123
To page
132
Abstract
A concept for the design of thermoelectric oxides, which is the method to decrease the thermal conductivity without decreasing the electrical conductivity using the complex oxide system, is proposed. The electrical transport properties and the defect structure of La0.45Nd0.45Sr0.1FeO3−δ, which corresponds to Sr-doped LaFeO3–NdFeO3 solid solution, were investigated to confirm the concept. La0.45Nd0.45Sr0.1FeO3−δ was found to show a p-type behavior between 1073 and 1273 K at an oxygen partial pressure of 10−4 to 1 atm. The values of hole mobility in La0.45Nd0.45Sr0.1FeO3−δ were found to be in good agreement with those of La0.9Sr0.1FeO3−δ. The heat of transport of the holes was also discussed using the small-polaron model.
Keywords
Heat of transport of holes , electrical conductivity , NdFeO3 , Mobility , Defect model , Seebeck coefficient , Hole concentration , LaFeO3 , thermal conductivity
Journal title
Solid State Ionics
Serial Year
2001
Journal title
Solid State Ionics
Record number
1713629
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