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Electronic and heat transport phenomena in the nanogranular thiospinel Fe.sub.3./sub.S.sub.4./sub.
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SYSNO ASEP 0543534 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Electronic and heat transport phenomena in the nanogranular thiospinel Fe3S4 Author(s) Knížek, Karel (FZU-D) RID, ORCID
Soroka, Miroslav (FZU-D) ORCID
Kaman, Ondřej (FZU-D) RID, ORCID
Kuličková, Jarmila (FZU-D) ORCID
Levinský, Petr (FZU-D) RID, ORCID
Hejtmánek, Jiří (FZU-D) RID, ORCID
Jirák, Zdeněk (FZU-D) RID, ORCID, SAINumber of authors 7 Article number 245129 Source Title Physical Review B. - : American Physical Society - ISSN 2469-9950
Roč. 103, č. 24 (2021)Number of pages 17 s. Language eng - English Country US - United States Keywords anomalous Hall effect ; Nernst effect ; Sebeck efect Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2018096 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA18-12761S GA ČR - Czech Science Foundation (CSF) GA19-06433S GA ČR - Czech Science Foundation (CSF) Research Infrastructure e-INFRA CZ - 90140 - CESNET, zájmové sdružení právnických osob Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000664448700001 EID SCOPUS 85109049211 DOI 10.1103/PhysRevB.103.245129 Annotation The iron sulphide Fe3S4(greigite) is similar to its oxide counterpart Fe3O4(magnetite) as to the crystal structure and ferrimagnetic order, but differs in electronic states. The ab initio calculations have evidenced p-type carriers at three spin-minority and three spin-majority Fermi surfaces, which is in contrast to the half-metallic character of magnetite with n-type carriers at three spin-minority Fermi surfaces. The transport properties including Hall and Nernst effects have been studied over the range 2–300 K by using nanogranular ceramics prepared by cold isostatic pressing of Fe3S4particles with the mean crystallite size of crystallite size of dXRD ≈ 80 and 30 nm,respectively. The samples show metalliclike electrical resistivity with large residual value at T → 0 K. The p-type character of the charge carriers is reflected by the positive sign of both the thermopower and Hall effect. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1103/PhysRevB.103.245129
Number of the records: 1