6. Solid-State and Semiconductor Physics, Physics of Nanostructures

Magnetic field and temperature dependences of the electrical resistance of onion structure carbon

Evgeny N. Tkachev
1. Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
Anatoliy I. Romanenko
1. Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
Olga B. Anikeeva
1. Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk, Russian Federation
2. Novosibirsk State University Novosibirsk, Russian Federation
The material was received by the Editorial Board: 10.12.2007
In this paper electro physical properties of samples of onion-like carbon have been investigated. Samples have been synthesized by method of thermal graphitization of nanodiamonds. 1D Mott variable-range hopping conductivity has been observed for temperature dependences of resistance of nanoonions volume samples at temperature range 4.2 K – 300 K. Also second-degree increase of positive magnetoresistance up to 6 tesla has been revealed. Some coefficients such as localization radius a, density of states on Fermi level N(EF) have been estimated.

Keywords:
Electrical resistance, magnetoresistance, onion-like carbon, nanoonions, 1D Mott variable-range hopping conductivity.
УДК: 537.311.31:537.312.6:537.312.8

Magnetic field and temperature dependences of the electrical resistance of onion structure carbon
References: Tkachev E.N., Romanenko A.I., Anikeeva O.B., Buryakov T.I., Zhdanov K.R., Kuznetsov V.L., Moseenkov S.I. Magnetic field and temperature dependences of the electrical resistance of onion structure carbon. Vestnik NSU. Series: Physics. 2008, vol. 3, no. 2. P. 95–98 (in Russ.). DOI: 10.54362/1818-7919-2008-3-2-95-98