EEL calculations and measurements of graphite and graphitic-CNx core-losses

A. Seepujak; U. Bangert; A. J. Harvey; V. D. Blank; B. A. Kulnitskiy; D. V. Batov

doi:10.1088/1742-6596/26/1/038

EEL calculations and measurements of graphite and graphitic-CNx core-losses

A. Seepujak
, U. Bangert
, A. J. Harvey
, V. D. Blank
, B. A. Kulnitskiy
, D. V. Batov

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

Core EEL spectra of MWCNTs (multi-wall carbon nanotubes) grown in a nitrogen atmosphere were acquired utilising a dedicated STEM equipped with a Gatan Enfina system. Splitting of the carbon K-edge π* resonance into two peaks provided evidence of two nondegenerate carbon bonding states. In order to confirm the presence of a CNx bonding state, a full-potential linearised augmented plane-wave method was utilised to simulate core EEL spectra of graphite and graphitic-CNx compounds. The simulations confirmed splitting of the carbon K-edge π* resonance in graphitic-CNx materials, with the pristine graphite π* resonance remaining unsplit. The simulations also confirmed the increasing degree of amorphicity with higher concentrations (25%) of substitutional nitrogen in graphite. © 2006 IOP Publishing Ltd.

Original language	English
Title of host publication	Journal of Physics: Conference Series\|J. Phys. Conf. Ser.
Publisher	IOP Publishing Ltd
Pages	161-164
Number of pages	3
Volume	26
DOIs	https://doi.org/10.1088/1742-6596/26/1/038
Publication status	Published - 1 Jan 2006
Event	EMAG-NANO 2005 - Leeds Duration: 1 Jan 1824 → …

Conference

Conference	EMAG-NANO 2005
City	Leeds
Period	1/01/24 → …

Keywords

WIEN
carbon nanotube

Access to Document

10.1088/1742-6596/26/1/038

Cite this

@inproceedings{18240fa58cff4dc98577a7fcfc2d955c,

title = "EEL calculations and measurements of graphite and graphitic-CNx core-losses",

abstract = "Core EEL spectra of MWCNTs (multi-wall carbon nanotubes) grown in a nitrogen atmosphere were acquired utilising a dedicated STEM equipped with a Gatan Enfina system. Splitting of the carbon K-edge π* resonance into two peaks provided evidence of two nondegenerate carbon bonding states. In order to confirm the presence of a CNx bonding state, a full-potential linearised augmented plane-wave method was utilised to simulate core EEL spectra of graphite and graphitic-CNx compounds. The simulations confirmed splitting of the carbon K-edge π* resonance in graphitic-CNx materials, with the pristine graphite π* resonance remaining unsplit. The simulations also confirmed the increasing degree of amorphicity with higher concentrations (25\%) of substitutional nitrogen in graphite. {\textcopyright} 2006 IOP Publishing Ltd.",

keywords = "WIEN, carbon nanotube",

author = "A. Seepujak and U. Bangert and Harvey, \{A. J.\} and Blank, \{V. D.\} and Kulnitskiy, \{B. A.\} and Batov, \{D. V.\}",

year = "2006",

month = jan,

day = "1",

doi = "10.1088/1742-6596/26/1/038",

language = "English",

volume = "26",

pages = "161--164",

booktitle = "Journal of Physics: Conference Series|J. Phys. Conf. Ser.",

publisher = "IOP Publishing Ltd",

address = "United Kingdom",

note = "EMAG-NANO 2005 ; Conference date: 01-01-1824",

}

TY - GEN

T1 - EEL calculations and measurements of graphite and graphitic-CNx core-losses

AU - Seepujak, A.

AU - Bangert, U.

AU - Harvey, A. J.

AU - Blank, V. D.

AU - Kulnitskiy, B. A.

AU - Batov, D. V.

PY - 2006/1/1

Y1 - 2006/1/1

N2 - Core EEL spectra of MWCNTs (multi-wall carbon nanotubes) grown in a nitrogen atmosphere were acquired utilising a dedicated STEM equipped with a Gatan Enfina system. Splitting of the carbon K-edge π* resonance into two peaks provided evidence of two nondegenerate carbon bonding states. In order to confirm the presence of a CNx bonding state, a full-potential linearised augmented plane-wave method was utilised to simulate core EEL spectra of graphite and graphitic-CNx compounds. The simulations confirmed splitting of the carbon K-edge π* resonance in graphitic-CNx materials, with the pristine graphite π* resonance remaining unsplit. The simulations also confirmed the increasing degree of amorphicity with higher concentrations (25%) of substitutional nitrogen in graphite. © 2006 IOP Publishing Ltd.

AB - Core EEL spectra of MWCNTs (multi-wall carbon nanotubes) grown in a nitrogen atmosphere were acquired utilising a dedicated STEM equipped with a Gatan Enfina system. Splitting of the carbon K-edge π* resonance into two peaks provided evidence of two nondegenerate carbon bonding states. In order to confirm the presence of a CNx bonding state, a full-potential linearised augmented plane-wave method was utilised to simulate core EEL spectra of graphite and graphitic-CNx compounds. The simulations confirmed splitting of the carbon K-edge π* resonance in graphitic-CNx materials, with the pristine graphite π* resonance remaining unsplit. The simulations also confirmed the increasing degree of amorphicity with higher concentrations (25%) of substitutional nitrogen in graphite. © 2006 IOP Publishing Ltd.

KW - WIEN

KW - carbon nanotube

U2 - 10.1088/1742-6596/26/1/038

DO - 10.1088/1742-6596/26/1/038

M3 - Conference contribution

VL - 26

SP - 161

EP - 164

BT - Journal of Physics: Conference Series|J. Phys. Conf. Ser.

PB - IOP Publishing Ltd

T2 - EMAG-NANO 2005

Y2 - 1 January 1824

ER -

EEL calculations and measurements of graphite and graphitic-CNx core-losses

Abstract

Conference

Keywords

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