Electronic structure and magnetic properties of graphene/Co composite / Zhidkov I. S.,Skorikov N. A.,Korolev A. V.,Kukharenko A. I.,Kurmaev E. Z.,Fedorov V. E.,Cholakh S. O. // CARBON. - 2015. - V. 91, l. . - P. 298-303.

ISSN/EISSN:

0008-6223 / 1873-3891

Type:

Article

Abstract:

The results of measurements of XPS spectra and magnetic properties of powder graphene/Co composite prepared by hydrogen reduction of CoCl2 center dot 6H(2)O deposited on few-layers graphene matrix are presented. XPS Co 2p measurements show two sets of 2p(3/2,1/2)-lines belonging to oxidized and metallic Co-atoms. This means that metal in composite is partly oxidized. This conclusion is confirmed by magnetic measurements which show the presence of the main (from the metal) and shifted (from the oxide) hysteresis loops. The presence of oxide layer on the metal surface prevents the metal from the full oxidation and (as shown by magnetic measurements) provides the preservation of ferromagnetic properties after long exposure in ambient air which enables the use of graphene/metal composites in spintronics devices. (C) 2015 Elsevier Ltd. All rights reserved.

Author keywords:

SUSCEPTIBILITY; TEMPERATURE; COO

DOI:

10.1016/j.carbon.2015.04.086

Web of Science ID:

ISI:000356554500031

Соавторы в МНС:

Другие поля

Поле	Значение
Month	SEP
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
EISSN	1873-3891
Keywords-Plus	SUSCEPTIBILITY; TEMPERATURE; COO
Research-Areas	Chemistry; Materials Science
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary
Author-Email	skorikov@imp.uran.ru
ResearcherID-Numbers	Zhidkov, Ivan/L-3543-2013 Kukharenko, Andrey/M-8256-2016 Cholakh, Seif/M-8221-2016 Kurmaev, Ernst/J-4254-2013 Skorikov, Nikolay/A-6728-2012 Alexander, Korolev/K-3036-2013
ORCID-Numbers	Zhidkov, Ivan/0000-0001-8727-4730 Kukharenko, Andrey/0000-0003-3774-6909 Cholakh, Seif/0000-0002-9313-6614 Kurmaev, Ernst/0000-0003-4625-4930 Skorikov, Nikolay/0000-0002-3771-8708 Alexander, Korolev/0000-0002-5104-3997 Fedorov, Vladimir/0000-0002-1057-3342
Funding-Acknowledgement	Grant of the Russian Scientific Foundation {[}14-22-00004]; CRDF Project {[}RUP1-7079-EK-12]
Funding-Text	The experimental measurements of XPS spectra and calculations of electronic structure were supported by the Grant of the Russian Scientific Foundation (project No. 14-22-00004). The preparation of samples and magnetic measurements were supported by CRDF Project (Number RUP1-7079-EK-12).
Number-of-Cited-References	39
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	58
Journal-ISO	Carbon
Doc-Delivery-Number	CK9IT