Relation between Electronic Structure and Thermoelectric Properties of Heusler-Type Ru2VAl Compounds

Relation between Electronic Structure and Thermoelectric Properties of Heusler-Type Ru2VAl Compounds

We investigated Heusler-type Ru2VAl, a candidate material for next-generation thermoelectric conversion, by first-principle calculations of its thermoelectric conversion properties and direct experimental observations of its electronic structures, employing photoemission and infrared spectroscopy. O...

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Veröffentlicht in:Crystals (Basel) 2022-10, Vol.12 (10), p.1403
Hauptverfasser: Miyazaki, Hidetoshi, Kimura, Shin-ichi, Onishi, Kensuke, Hihara, Takehiko, Yoshimura, Masato, Ishii, Hirofumi, Mikami, Masashi, Nishino, Yoichi
Format: Artikel
Sprache:eng
Schlagworte:
Approximation
Conversion
Electronic structure
Energy
First principles
first-principle calculation
Heat conductivity
Heusler-type Ru2VAl
infra-red spectroscopy
Materials selection
Photoelectric emission
photoemission spectroscopy
Spectrum analysis
Thermoelectric materials
thermoelectric properties
Thermoelectricity
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Zusammenfassung:We investigated Heusler-type Ru2VAl, a candidate material for next-generation thermoelectric conversion, by first-principle calculations of its thermoelectric conversion properties and direct experimental observations of its electronic structures, employing photoemission and infrared spectroscopy. Our results show that Ru2VAl has a wider pseudogap near the Fermi level compared to Fe2VAl. Accordingly, a higher thermoelectric conversion performance can be expected in Ru2VAl at higher temperatures.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst12101403