Influence of Ni impurities on the thermoelectric properties of Ca-partially filled skutterudites CaxCo4Sb12.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00389332" target="_blank" >RIV/68378271:_____/12:00389332 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4768439" target="_blank" >http://dx.doi.org/10.1063/1.4768439</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4768439" target="_blank" >10.1063/1.4768439</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Ni impurities on the thermoelectric properties of Ca-partially filled skutterudites CaxCo4Sb12.

Popis výsledku v původním jazyce

Polycrystalline samples of the skutterudite compounds CaxCo4Sb12 were synthesized and investigated by means of electrical resistivity, thermal conductivity, and thermopower in the 300?800K temperature range. Additional Hall effect measurements were performed between 2 and 300 K. Both Ni-free and Ni-containing Co powders were used as starting materials to elucidate the impact of Ni impurities at the ppm level on the thermoelectric properties. The presence of minute amounts of Ni atoms in the crystal structure leads to enhanced thermopower values with respect to the Ni-free samples, likely associated with the development of additional electron pockets near the Fermi level.Ni impurities, thus, play a significant role on the transport properties and lead to a spectacular increase in the dimensionless thermoelectric figure of merit ZT of up to 150% at 800 K.

Název v anglickém jazyce

Influence of Ni impurities on the thermoelectric properties of Ca-partially filled skutterudites CaxCo4Sb12.

Popis výsledku anglicky

Polycrystalline samples of the skutterudite compounds CaxCo4Sb12 were synthesized and investigated by means of electrical resistivity, thermal conductivity, and thermopower in the 300?800K temperature range. Additional Hall effect measurements were performed between 2 and 300 K. Both Ni-free and Ni-containing Co powders were used as starting materials to elucidate the impact of Ni impurities at the ppm level on the thermoelectric properties. The presence of minute amounts of Ni atoms in the crystal structure leads to enhanced thermopower values with respect to the Ni-free samples, likely associated with the development of additional electron pockets near the Fermi level.Ni impurities, thus, play a significant role on the transport properties and lead to a spectacular increase in the dimensionless thermoelectric figure of merit ZT of up to 150% at 800 K.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Physics Letters

ISSN

0003-6951

e-ISSN

—

Svazek periodika

101

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

"222105-1"-"222105-4"

Kód UT WoS článku

000311967000040

EID výsledku v databázi Scopus

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