Magnetic Defects In Pristine And Hydrogenterminated Nanodiamonds View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2006-01-01

AUTHORS

VLADIMIR OSIPOV , MARINA BAIDAKOVA , KAZUYUKI TAKAI , TOSHIAKI ENOKI , ALEXANDER VUL

ABSTRACT

Magnetic susceptibility study allows to make certain conclusions about the origin and location of itinerant and localized spins in carbon-based nanomaterials as well as their interaction between themselves. Nanodiamonds (ND) with the mean size about 4-5 nm is an interesting object for studying electronic and magnetic properties of diamond surface throughout its high specific area. Chemically modified ND particle is a very promising new unique material for applications in molecular nano-electronics. Results of recent magnetic studies of pristine and hydrogen-terminated ND samples, obtained by detonation technique, are reported and discussed. In addition to characteristic structural defects, originating from dangling C-C bonds of sp3 sites and located mainly in the interior of the nanocrystals, the hydrogen-terminated ND crystals show a high concentration of excess stable free radicals (up to 1021 spin/g), which are due to structural defects (dangling C-C bonds) induced on the surface of diamond nanocrystals by hydrothermal treatment. Strong antiferromagnetic coupling is found between the spins localized on the surface. More... »

PAGES

447-456

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/1-4020-4367-8_36

DOI

http://dx.doi.org/10.1007/1-4020-4367-8_36

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1011279768


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