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Irregular network of extended defects in graphene and a new criterion of the crystal lattice melting.

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Title: Irregular network of extended defects in graphene and a new criterion of the crystal lattice melting.
Authors: Kondrin, M.V.1 (AUTHOR) mkondrin@hppi.troitsk.ru, Lebed, Y.B.2 (AUTHOR), Brazhkin, V.V.1 (AUTHOR)
Source: Diamond & Related Materials. Jun2024, Vol. 146, pN.PAG-N.PAG. 1p.
Subjects: Thermodynamics, Crystal lattices, Graphene, Melting, Point defects
Abstract: Investigation of graphite defects has long and rich history. However, it turned out, that most point defects in graphene, such as vacancies or topological Stone-Wales defect, have high formation energies, preventing them from formation in large quantities. Recently, we have proposed a new type of extended defects in graphene, with formation energy per atom only slightly above the melting temperature. This means, that these planar defects may occur near the melting temperature in sufficient quantities to influence the thermodynamic properties of graphene. Still, there is discrepancy between thermodynamic properties of these defects and their topology, which can be successfully resolved by proposition of a new defects' type – irregular network of extended defects, which will be described in this paper. The study of network stability from these defects enables us to formulate a new criterion of crystal lattice melting, which supersedes the Lindemann/Born criteria. [Display omitted] • We propose existence of irregular defect network in graphene. • A new crystal melting criterion is put forward. • This supercedes existing Born/Lindemann criteria. [ABSTRACT FROM AUTHOR]
Copyright of Diamond & Related Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 177847910
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  Data: Investigation of graphite defects has long and rich history. However, it turned out, that most point defects in graphene, such as vacancies or topological Stone-Wales defect, have high formation energies, preventing them from formation in large quantities. Recently, we have proposed a new type of extended defects in graphene, with formation energy per atom only slightly above the melting temperature. This means, that these planar defects may occur near the melting temperature in sufficient quantities to influence the thermodynamic properties of graphene. Still, there is discrepancy between thermodynamic properties of these defects and their topology, which can be successfully resolved by proposition of a new defects' type – irregular network of extended defects, which will be described in this paper. The study of network stability from these defects enables us to formulate a new criterion of crystal lattice melting, which supersedes the Lindemann/Born criteria. [Display omitted] • We propose existence of irregular defect network in graphene. • A new crystal melting criterion is put forward. • This supercedes existing Born/Lindemann criteria. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Diamond & Related Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.diamond.2024.111150
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Thermodynamics
        Type: general
      – SubjectFull: Crystal lattices
        Type: general
      – SubjectFull: Graphene
        Type: general
      – SubjectFull: Melting
        Type: general
      – SubjectFull: Point defects
        Type: general
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      – TitleFull: Irregular network of extended defects in graphene and a new criterion of the crystal lattice melting.
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            – D: 01
              M: 06
              Text: Jun2024
              Type: published
              Y: 2024
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              Value: 146
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