@article{oai:nagoya.repo.nii.ac.jp:00018680,
 author = {Soda, K and Harada, S and Kato, M and Yagi, S and Sandaiji, Y and Nishino, Y},
 journal = {IOP Conference Series: Materials Science and Engineering},
 month = {Jun},
 note = {The valence-band and core-level soft x-ray photoelectron spectroscopy has been applied to investigate the origin of the large thermoelectric power in the off-stoichiometric and partially-substituted Fe-based Heusler-type alloys Fe2−x−yIryV1+xAl and Fe2−xV1+x−yTiyAl. The non-rigid-band-like change in the valence-band electronic structure near the Fermi level EF is found for the off-stoichiometric change x in Fe and V concentrations, whereas the rigid-bandlike shift of EF is recognized on the Ir or Ti substitution y. The non-rigid-band-like change may be induced by the excess-V or Fe (anti-site defects)-derived states in the pseudogap of Fe2VAl, while the rigid-band-like shift may be caused by a common band formation, where the d states of the substituted elements are incorporated into the main Fe-V 3d bands. The V2p core-level spectra consistently show the satellite structure due to the excess V as the anti-site defect. A model electronic structure is presented for explaining the observed enhancement of their thermoelectric power., 3rd International Congress on Ceramics (ICC3), Symposium 9C: Ceramics for Electricity; Direct Conversion Technology between Heat and Electricity, November 14-18, 2010, Osaka, Japan},
 pages = {142004--142004},
 title = {Origin of large thermoelectric power in off-stoichiometric Fe2VAl-based alloys},
 volume = {18},
 year = {2011}
}