Defect-induced magnetism in graphite through neutron irradiation
نویسندگان
چکیده
منابع مشابه
Irradiation-induced magnetism in graphite: a density functional study.
Recent experiments indicate that proton irradiation triggers ferromagnetism in originally nonmagnetic graphite samples while He ion bombardment has a much smaller effect. To understand the origin of irradiation-induced magnetism, we have performed spin-polarized density functional theory calculations of the magnetic properties of the defects which are most likely to appear under irradiation vac...
متن کاملTitle: Irradiation-Induced Magnetism in Graphite: A Density Functional Study
Rights: © 2004 American Physical Society (APS). This is the accepted version of the following article: Lehtinen, P. O. & Foster, Adam S. & Ma, Yuchen & Krasheninnikov, A. V. & Nieminen, R. M.. 2004. Irradiation-Induced Magnetism in Graphite: A Density Functional Study. Physical Review Letters. Volume 93, Issue 18. 187202/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.93.187202, which h...
متن کاملDefect-induced magnetism in neutron irradiated 6H-SiC single crystals.
Defect-induced magnetism is firstly observed in neutron irradiated SiC single crystals. We demonstrated that the intentionally created defects dominated by divacancies (V(Si)V(C)) are responsible for the observed magnetism. First-principles calculations revealed that defect states favor the formation of local moments and the extended tails of defect wave functions make long-range spin couplings...
متن کاملDefect-induced magnetism in graphene
We study from first principles the magnetism in graphene induced by single carbon atom defects. For two types of defects considered in our study, the hydrogen chemisorption defect and the vacancy defect, the itinerant magnetism due to the defect-induced extended states has been observed. Calculated magnetic moments are equal to 1 B per hydrogen chemisorption defect and 1.12–1.53 B per vacancy d...
متن کاملDefect-induced ferromagnetism in graphite
We demonstrate direct evidence for ferromagnetic order at defect structures in highly oriented pyrolytic graphite with magnetic force microscopy at room temperature. Magnetic impurities have been excluded as the origin of the magnetic signal after careful analysis supporting an intrinsic magnetic behavior of carbon-based materials. The observed ferromagnetism has been attributed to originate fr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2014
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.90.214435