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Ferromagnetism: Sulfur Doping Induces Strong Ferromagnetic Ordering in Graphene: Effect of Concentration and Substitution Mechanism (Adv. Mater. 25/2016)
Author(s) -
Tuček Jiří,
Błoński Piotr,
Sofer Zdeněk,
Šimek Petr,
Petr Martin,
Pumera Martin,
Otyepka Michal,
Zbořil Radek
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201670177
Subject(s) - delocalized electron , graphene , sulfur , materials science , doping , unpaired electron , ferromagnetism , condensed matter physics , atom (system on chip) , electron , magnetic moment , electron delocalization , chemical physics , nanotechnology , optoelectronics , organic chemistry , chemistry , physics , quantum mechanics , computer science , metallurgy , embedded system
R. Zbořil and co‐workers show that doping a graphene lattice with sulfur induces magnetic centers which display ferromagnetic order below ≈62 K. As described on page 5045, sulfur doping promotes magnetically active configurations resembling the gamma‐thiothiapyrone motif. Enhanced magnetic properties of sulfur‐doped graphene are attributed to two unpaired electrons from each sulfur atom injected into the graphene conducting band where they are delocalized between the S and C atoms.