Magnetic Centres in Functionalized Graphene

• Authors: Ł. Majchrzycki , M. Augustyniak-Jabłokow , R. Strzelczyk , M. Maćkowiak
• Languages of publication: EN

Abstracts

EN

Discussion of the origin of paramagnetic centres observed by electron paramagnetic resonance in graphene oxide (GO) and reduced graphene oxide (rGO) is done on the assumption that GO can be considered as a functionalized graphene. This leads to the conclusion that the narrow signal with g close to 2, observed for GO and thermally reduced GO, is due to paramagnetic centres localized on defects and exchange coupled to conduction electrons. Randomness of graphene modification results in variety of parameters of EPR signals. The broad signals observed in GO and rGO and ascribed to magnetic clusters on the zig-zag edge states indicate that the edge magnetism can be preserved by functionalization.

Keywords

EN

75.70.Ak; 81.05.ue; 76.50.+g

Discipline

• 75.70.Ak: Magnetic properties of monolayers and thin films
• 81.05.ue: Graphene(for structure of graphene, see 61.48.Gh; for phonons in graphene, see 63.22.Rc; for thermal properties, see 65.80.Ck; for graphene films, see 68.65.Pq; for electronic transport, see 72.80.Vp; for electronic structure, see 73.22.Pr; for optical properties, see 78.67.Wj)
• 76.50.+g: Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance(see also 75.30.Ds Spin waves)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 540-542

Dates

published

2015-02

Contributors

author

Ł. Majchrzycki

• Institute of Physics, Poznań University of Technology, Nieszawska 13a, 60-965 Poznań, Poland
• Wielkopolska Centre of Advanced Technology, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland

author

M. Augustyniak-Jabłokow

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

R. Strzelczyk

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

M. Maćkowiak

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

References

• [1] M. Song, D. Cai, in: Polymer-Graphene Nanocomposites, Ed. V. Mittal, RSC Publ., Dorchester 2012, p. 1, doi: 10.1039/9781849736794
• [2] V. Georgakilas, M. Otyepka, A.B. Bourlinos, V. Chandra, N. Ki, K.C. Kemp, P. Hobza, R. Zboril, K.S. Kim, Chem. Rev. 112, 6156 (2012), doi: 10.1021/cr3000412
• [3] Y. Zhu, S. Murali, W. Cai, X. Li, J.W. Suk, J.R. Potts, R.S. Ruoff, Adv. Mater. 22, 3906 (2010), doi: 10.1002/adma.201001068
• [4] W.S. Hummers Jr, R.E. Offeman, J. Am. Chem. Soc. 80, 1339 (1958), doi: 10.1021/ja01539a017
• [5] K.A. Mkhoyan, A.W. Contryman, J. Silcox, D.A. Stewart, G. Eda, C. Mattevi, S. Miller, M. Chhowalla, Nano Lett. 9, 1058 (2009), doi: 10.1021/nl8034256
• [6] S. Pei, H.M. Cheng, Carbon 50, 3210 (2012), doi: 10.1016/j.carbon.2011.11.010
• [7] L. Ćirić, A. Sienkiewicz, D.M. Djokić, R. Smajda, A. Magrez, T. Kaspar, R. Nesper, L. Forró,Phys. Status Solidi B 247, 2958 (2010), doi: 10.1002/pssb.201000448
• [8] L. Ćirić, A. Sienkiewicz, R. Gaál, J. Jaćimović, C. Vâju, A. Magrez, L. Forró, Phys. Rev. B 86, 195139 (2012), doi: 10.1103/PhysRevB.86.195139
• [9] S.S. Rao, A. Stesmans, Y. Wang, Y. Chen, Physica E Low Dimens. Syst. Nanostruct. 44, 1036 (2012), doi: 10.1016/j.physe.2011.07.019
• [10] X. Gao, J. Jang, S. Nagase, J. Phys. Chem. C 114, 832 (2009), doi: 10.1021/jp909284g
• [11] C.K. Chua, M. Pumera, Chem. Soc. Rev. 43, 291 (2014), doi: 10.1039/C3CS60303B
• [12] A.M. Panich, A.I. Shames, N.A. Sergeev, Appl. Magn. Reson. 44, 107 (2013), doi: 10.1007/s00723-012-0392-z
• [13] M.A. Augustyniak-Jabłokow, K. Tadyszak, M. Maćkowiak, Y.V. Yablokov, Phys. Status Solidi (RRL) - Rapid Res. Lett. 5, 271 (2011), doi: 10.1002/pssr.201105234
• [14] M.A. Augustyniak-Jabłokow, K. Tadyszak, M. Maćkowiak, S. Lijewski, Chem. Phys. Lett. 557, 118 (2013), doi: 10.1016/j.cplett.2012.12.018
• [15] M.A. Augustyniak-Jabłokow, M. Maćkowiak, K. Tadyszak, R. Strzelczyk, Acta Phys. Pol. A 127, 537 (2015), doi: 10.12693/APhysPolA.127.537

Identifiers

DOI

10.12693/APhysPolA.127.540