Electron spin resonance study of ferromagnetic graphite with orientational disorder

Dowan Kim, Kyu Won Lee, Cheol Eui Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have investigated highly oriented pyrolytic graphite (HOPG) with a mosaic spread (ZYH) by employing electron spin resonance (ESR) measurements in comparison to high-grade virgin HOPG (ZYA) and proton-irradiated ZYA (Irr-ZYA). In spite of ferromagnetism found in ZYH as in Irr-ZYA, the ESR spectra in ZYH resemble those in ZYA rather than those in Irr-ZYA, only giving a conduction electron signal. Distinct characteristics of the conduction electron signals were investigated, the g-values and the linewidths being interpreted in terms of the carrier density and the magnetic susceptibility in relation to defects in the systems.

Original languageEnglish
Pages (from-to)5-7
Number of pages3
JournalSolid State Communications
Volume160
DOIs
Publication statusPublished - 2013 Apr 1

Fingerprint

Graphite
pyrolytic graphite
conduction electrons
Paramagnetic resonance
electron paramagnetic resonance
graphite
disorders
Electrons
Ferromagnetism
Magnetic susceptibility
Linewidth
ferromagnetism
Carrier concentration
Protons
grade
magnetic permeability
Defects
protons
defects

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Chemistry

Cite this

Electron spin resonance study of ferromagnetic graphite with orientational disorder. / Kim, Dowan; Won Lee, Kyu; Lee, Cheol Eui.

In: Solid State Communications, Vol. 160, 01.04.2013, p. 5-7.

Research output: Contribution to journalArticle

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AB - We have investigated highly oriented pyrolytic graphite (HOPG) with a mosaic spread (ZYH) by employing electron spin resonance (ESR) measurements in comparison to high-grade virgin HOPG (ZYA) and proton-irradiated ZYA (Irr-ZYA). In spite of ferromagnetism found in ZYH as in Irr-ZYA, the ESR spectra in ZYH resemble those in ZYA rather than those in Irr-ZYA, only giving a conduction electron signal. Distinct characteristics of the conduction electron signals were investigated, the g-values and the linewidths being interpreted in terms of the carrier density and the magnetic susceptibility in relation to defects in the systems.

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