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Defect-induced magnetism in graphite through neutron irradiation.
- Source :
-
Physical Review B: Condensed Matter & Materials Physics . Dec2014, Vol. 90 Issue 21, p214435-1-214435-9. 9p. - Publication Year :
- 2014
-
Abstract
- We have investigated the variation in the magnetization of highly ordered pyrolytic graphite (HOPG) after neutron irradiation, which introduces defects in the bulk sample and consequently gives rise to a large magnetic signal. We observe strong paramagnetism in HOPG, increasing with the neutron fiuence. The induced paramagnetism can be well correlated with structural defects by comparison with density-functional theory calculations. In addition to the in-plane vacancies, the transplanar defects also contribute to the magnetization. The lack of any magnetic order between the local moments is possibly due to the absence of hydrogen/nitrogen chemisorption, or the magnetic order cannot be established at all in the bulk form. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10980121
- Volume :
- 90
- Issue :
- 21
- Database :
- Academic Search Index
- Journal :
- Physical Review B: Condensed Matter & Materials Physics
- Publication Type :
- Academic Journal
- Accession number :
- 100791818
- Full Text :
- https://doi.org/10.1103/PhysRevB.90.214435