Počet záznamů: 1
Origin of exotic ferromagnetic behavior in exfoliated layered transition metal dichalcogenides MoS.sub.2./sub. and WS.sub.2./sub.
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SYSNO ASEP 0471543 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Origin of exotic ferromagnetic behavior in exfoliated layered transition metal dichalcogenides MoS2 and WS2 Tvůrce(i) Luxa, J. (CZ)
Jankovský, O. (CZ)
Sedmidubský, D. (CZ)
Medlín, R. (CZ)
Maryško, Miroslav (FZU-D) RID
Pumera, M. (SG)
Sofer, Z. (CZ)Celkový počet autorů 7 Zdroj.dok. Nanoscale. - : Royal Society of Chemistry - ISSN 2040-3364
Roč. 8, č. 4 (2016), s. 1960-1967Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova transition metal dichalcogenides ; ferromagnetism Vědní obor RIV BM - Fyzika pevných látek a magnetismus Institucionální podpora FZU-D - RVO:68378271 UT WOS 000368860900024 EID SCOPUS 84955498365 DOI 10.1039/c5nr05757d Anotace Bulk layered transition metal dichalcogenides (TMDs) show diamagnetic properties. When exfoliated, the materials' band gap increases and changes from an indirect band gap to a direct one. During the exfoliation, the TMDs may undergo a phase transition from 2H to 1T polymorph, which is likely electronically driven and accompanied by a metal-insulator transition. A significantly higher efficiency of the exfoliation was observed using sodium naphthalenide compared to butyllithium. Moreover we demonstrate that the exfoliation has a dramatic influence on the magnetic properties of two TMDs, MoS2 and WS2. These materials become partly ferromagnetic upon exfoliation, which is a highly unexpected behavior. Exotic ferromagnetism is generally observed on samples with a high degree of exfoliation, which indicates the association of this effect with defects formed on the edges of dichalcogenide sheets. Such an exotic ferromagnetic behavior, if properly understood and brought under material engineering control, shall open the door to new applications of these materials. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2017
Počet záznamů: 1