Electron spin resonance study of ferromagnetic graphite with orientational disorder

Dowan Kim; Kyu Won Lee; Cheol Eui Lee

doi:10.1016/j.ssc.2013.02.006

Electron spin resonance study of ferromagnetic graphite with orientational disorder

Dowan Kim
, Kyu Won Lee
, Cheol Eui Lee

Division of System Semiconductor

Korea University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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 language	English
Pages (from-to)	5-7
Number of pages	3
Journal	Solid State Communications
Volume	160
DOIs	https://doi.org/10.1016/j.ssc.2013.02.006
State	Published - Apr 2013

Keywords

A. Graphite with disorder
B. Proton-irradiation
D. Ferromagnetism
E. Electron spin resonance

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10.1016/j.ssc.2013.02.006

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title = "Electron spin resonance study of ferromagnetic graphite with orientational disorder",

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.",

keywords = "A. Graphite with disorder, B. Proton-irradiation, D. Ferromagnetism, E. Electron spin resonance",

author = "Dowan Kim and \{Won Lee\}, Kyu and \{Eui Lee\}, Cheol",

year = "2013",

month = apr,

doi = "10.1016/j.ssc.2013.02.006",

language = "English",

volume = "160",

pages = "5--7",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Electron spin resonance study of ferromagnetic graphite with orientational disorder

AU - Kim, Dowan

AU - Won Lee, Kyu

AU - Eui Lee, Cheol

PY - 2013/4

Y1 - 2013/4

N2 - 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.

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.

KW - A. Graphite with disorder

KW - B. Proton-irradiation

KW - D. Ferromagnetism

KW - E. Electron spin resonance

UR - https://www.scopus.com/pages/publications/84876064705

U2 - 10.1016/j.ssc.2013.02.006

DO - 10.1016/j.ssc.2013.02.006

M3 - Article

AN - SCOPUS:84876064705

SN - 0038-1098

VL - 160

SP - 5

EP - 7

JO - Solid State Communications

JF - Solid State Communications

ER -

Electron spin resonance study of ferromagnetic graphite with orientational disorder

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