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Doping with Graphitic Nitrogen Triggers Ferromagnetism in Graphene

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913396" target="_blank" >RIV/60461373:22310/17:43913396 - isvavai.cz</a>

  • Alternative codes found

    RIV/61989592:15310/17:73582609

  • Result on the web

    <a href="http://pubs.acs.org/doi/abs/10.1021/jacs.6b12934" target="_blank" >http://pubs.acs.org/doi/abs/10.1021/jacs.6b12934</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1021/jacs.6b12934" target="_blank" >10.1021/jacs.6b12934</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Doping with Graphitic Nitrogen Triggers Ferromagnetism in Graphene

  • Original language description

    Nitrogen doping opens possibilities for tailoring the electronic properties and band gap of graphene toward its applications, e.g., in spintronics and optoelectronics. One major obstacle is development of magnetically active N-doped graphene with spin-polarized conductive behavior. However, the effect of nitrogen on the magnetic properties of graphene has so far only been addressed theoretically, and triggering of magnetism through N doping has not yet been proved experimentally, except for systems containing a high amount of oxygen and thus decreased conductivity. Here, we report the first example of ferromagnetic graphene achieved by controlled doping with graphitic, pyridinic, and chemisorbed nitrogen. The magnetic properties were found to depend strongly on both the nitrogen concentration and type of structural N-motifs generated in the host lattice. Graphenes doped below 5 at. % of nitrogen were nonmagnetic; however, once doped at 5.1 at. % of nitrogen, N-doped graphene exhibited transition to a ferromagnetic state at similar to 69 K and displayed a saturation magnetization reaching 1.09 emu/g. Theoretical calculations were used to elucidate the effects of individual chemical forms of nitrogen on magnetic properties. Results showed that magnetic effects were triggered by graphitic nitrogen, whereas pyridinic and chemisorbed nitrogen contributed much less to the overall ferromagnetic ground state. Calculations further proved the existence of exchange coupling among the paramagnetic centers mediated by the conduction electrons.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10402 - Inorganic and nuclear chemistry

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of the American Chemical Society

  • ISSN

    0002-7863

  • e-ISSN

  • Volume of the periodical

    139

  • Issue of the periodical within the volume

    8

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    10

  • Pages from-to

    3171-3180

  • UT code for WoS article

    000395493400051

  • EID of the result in the Scopus database

    2-s2.0-85014205916