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HomeSolid State PhenomenaSolid State Phenomena Vol. 289Isoelectronic Modifications of Thermoelectric...

Isoelectronic Modifications of Thermoelectric Properties in Fe₂V_1-xNb_xAl

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Abstract:

Substituting V/Nb in Fe₂VAl causes an initial increase of the unit cell volume as well as an increaseof the structural disorder. Although V and Nb are isoelectronically, slight changes of the electronicdensity of states N(E) right at the Fermi energy are obtained. While for a 10 % substitution of V/Nbthe absolute value of N(E_F) keeps almost constant, the slope of N(E) grows. As a result, the Seebeckeffect grows in comparsion to the starting material Fe₂VAl, reaching values of about 100 μ V/K at roomtemperature. The latter is one of the largest found so far for p-type substituted Fe₂VAl.

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Solid Compounds of Transition Elements III

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Solid State Phenomena (Volume 289)

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141-147

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https://doi.org/10.4028/www.scientific.net/SSP.289.141

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Online since:

April 2019

Authors:

Ronja Kamelreiter, Bernhard Hinterleitner, Sergii Khmelevskyi, Ernst Bauer*

Keywords:

Fe₂VAl, Heusler System, Thermoelectricity

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© 2019 Trans Tech Publications Ltd. All Rights Reserved

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