Počet záznamů: 1
Electrical, thermal, and magnetic characterization of natural tetrahedrites-tennantites of different origin
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SYSNO ASEP 0470897 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Electrical, thermal, and magnetic characterization of natural tetrahedrites-tennantites of different origin Tvůrce(i) Levinský, Petr (FZU-D) RID, ORCID
Vaney, J.B. (FR)
Candolfi, C. (FR)
Dauscher, A. (FR)
Lenoir, B. (FR)
Hejtmánek, Jiří (FZU-D) RID, ORCIDCelkový počet autorů 6 Zdroj.dok. Journal of Electronic Materials. - : Springer - ISSN 0361-5235
Roč. 45, č. 3 (2016), s. 1351-1357Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova thermoelectric properties ; natural minerals ; sulfosalts ; tetrahedrite-tennantite series ; spark plasma sintering (SPS) ; magnetism Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEP GA13-17538S GA ČR - Grantová agentura ČR Institucionální podpora FZU-D - RVO:68378271 UT WOS 000371163400022 EID SCOPUS 84959527648 DOI 10.1007/s11664-015-4032-x Anotace Naturally occurring sulfosalt minerals of the tetrahedrite–tennantite series ((Cu,Fe,Zn,Ag,Hg)12(Sb,As)4S13) are studied because of their potential use as basic components in the manufacture of thermoelectric devices for moderate-temperature applications. In the work reported herein, the chemical, crystallographic, thermoelectric, and magnetic properties of four specimens from different ores from Europe and America were exhaustively characterized. Our study revealed that these natural tetrahedrites usually behave as low-to-moderately doped p-type semiconductors with low mobility. Their carrier charge transport is thus located at the edge between hopping and itinerant mechanisms. The magnetic study, probing the behavior of the constituent iron species, revealed that an insignificant part of the iron occurs as ferromagnetic impurities. The dominant iron species is Fe2+ ions with antiferromagnetic interactions. The maximum value of ZT observed was 0.13 at 700 K; this value impaired, primarily, by high electrical resistivity. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2017
Počet záznamů: 1