TY - JOUR
T1 - Electron spin resonance study of ferromagnetic graphite with orientational disorder
AU - Kim, Dowan
AU - Won Lee, Kyu
AU - Eui Lee, Cheol
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRL Program 2012-0006259 and No. 20100-029418 ). The measurements at the Korean Basic Science Institute are acknowledged.
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
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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 -