Sulfur Doping Induces Strong Ferromagnetic Ordering in Graphene: Effect of Concentration and Substitution Mechanism

Jiří Tuček; Piotr Błoński; Zdeněk Sofer; Petr Šimek; Martin Petr; Martin Pumera; Michal Otyepka; Radek Zbořil

doi:10.1002/adma.201600939

Sulfur Doping Induces Strong Ferromagnetic Ordering in Graphene: Effect of Concentration and Substitution Mechanism

Adv Mater. 2016 Jul;28(25):5045-53. doi: 10.1002/adma.201600939. Epub 2016 May 2.

Authors

Jiří Tuček¹, Piotr Błoński¹, Zdeněk Sofer², Petr Šimek², Martin Petr¹, Martin Pumera³, Michal Otyepka¹, Radek Zbořil¹

Affiliations

¹ Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Šlechtitelů 27, 783 71, Olomouc, Czech Republic.
² Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czech Republic.
³ Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore.

PMID: 27135692
DOI: 10.1002/adma.201600939

Abstract

Imprinting ferromagnetism to a graphene structure by substitution of carbon atoms with sulfur is reported. S-doped graphene (4.2 at%) shows strong ferromagnetic properties with saturation magnetization exceeding 5.5 emu g(-1) at 2 K, which is among the highest values reported for any sp-based system. The remarkable magnetic response is attributed to delocalization of electrons from sulfur injected into the graphene conduction band.

Keywords: ferromagnetic ordering; functionalization; graphene; spintronics; substitution; sulfur.