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Novel Solid Nano Diamond/Pyrocarbon Semiconductor Materials

Published online by Cambridge University Press:  17 March 2011

Sergey K. Gordeev,
Peter I. Belobrov,
Nikolay I. Kiselev,
Eleonora A. Petrakovskaya and
Thommy C. Ekstrom
Sergey K. Gordeev
Affiliation:
Central Research Institute for Materials, St. Petersburg, RUSSIA
Peter I. Belobrov
Affiliation:
Kirensky Institute of Physics & Institute of Biophysics SB RAS, Krasnoyarsk, RUSSIA
Nikolay I. Kiselev
Affiliation:
Kirensky Institute of Physics & Institute of Biophysics SB RAS, Krasnoyarsk, RUSSIA
Eleonora A. Petrakovskaya
Affiliation:
Kirensky Institute of Physics & Institute of Biophysics SB RAS, Krasnoyarsk, RUSSIA
Thommy C. Ekstrom
Affiliation:
Skeleton Technologies Group, Stockholm, SWEDEN
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Abstract

Porous solids made of nano diamonds cemented by pyrocarbon show a semiconductor behavior where the properties are controlled by the factor γ = mass ratio of sp2/sp3 phases. The volume electrical conductivity μ (T) was measured in the temperature range 77 - 290 K as a function of γ. By controlling the ratio γ from 0 to 50 %, the electrical conductivity will change by 12 orders of magnitude. The semiconductor activation energy depends on γ-ratio and has values between 0.03 - 0.3 eV. The variable-range hopping conduction was checked by measuring μ against T and to look for a T1/4 dependence. A positive thermoelectric power showed that NDC was p-semiconductor with a narrow band gap. The paramagnetic nanodiamonds, g = 2.0027(1) and δH = 0.86(2) mT, will still have this property in the NDC material and both the g-value and line width are not dependent on γ-ratio and temperature. The concentration of unpaired electrons is 41019 spin/g that equals to one dangling bond per nanodiamond particle. Absences of magnetoresistance and Hall potential were observed for all NDC materials. This was interpreted as resulting from a Tamm - Lifshitz - Pekar electronic conduction mechanism within onedimensional band of surface states.

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References

1. Staver, A. M., Gubareva, N. V., Lyamkin, A. I. and Petrov, E. A., Ultradisperse diamond powders obtained by the explosion energy using, Combustion explosion and shock waves, 20, 100–104 (1984).Google Scholar
2. Greiner, N. R., Philips, D. S., Johnson, J. D. and Volk, F., Diamonds in detonation soot, Nature, 333, 440–442 (1988).Google Scholar
3. Badziag, P., Verwoerd, W. S., Ellis, W. P. and Greiner, N. R., Nanometre-sized diamonds are more stable than graphite, Nature, 343, 244–245 (1990).Google Scholar
4. Gamarnik, M.Y. Energetical preference of diamond nanoparticles, Phys. Rev., B54, 2150–2156 (1996).Google Scholar
5. Gordeev, S. K., Zhukov, S. G., Nikitin, Y. I. and Poltoratskii, V. G., Preparation of ultradisperse diamonds pyrolytic carbon composite materials, Inorg. Mater., 31, 434–438 (1995).Google Scholar
6. Gordeev, S. K., Zhukov, S. G., Belobrov, P. I., Smolianinov, A. N., and Dikov, Ju. P., U.S. Patent No. 6 083 614 (4 July 2000), Russian Patent No. 95116683 (27 September 1995).Google Scholar
7. Tamm, I. E. Über eine mögliche Art der Electronenbindung an Kristalloberflächen, Z. Phys. Sowjetunion, 1, 733–746 (1932).Google Scholar
8. Lifshitz, I. M. and Pekar, S. P., Tamm bound states on a crystal surface and surface vibration of lattice atoms, Uspekhi Fiz. Nauk, 56, 531–568 (1955).Google Scholar
9. Vlasov, A.V., Ralchenko, V.G., Gordeev, S.K., Zakharov, D.V., Vlasov, I.I., Karabutov, A.V., and Belobrov, P.I., Thermal properties of diamond/carbon composites, Diamond Relat. Mater., 9, 1104–1109 (2000).Google Scholar
10 Belobrov, P. I., Gordeev, S. K., Petrakovskaya, E. A. and Falaleev, O. V., Paramagnetic properties of nanodiamond, Doklady Physics, 46, No. 7 (2001) (in press).Google Scholar
11 Lifshitz, I. M., On structure of energetic spectra and quantum states of disordered condensed systems, Soviet Physics Uspekhi, 7, 549–573 (1965).Google Scholar