Revaz Koxreidze

Vladimer Chavchanidze Institute of Cybernetics of the Georgian Technical University

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Pre-Stages of the Formation 0f Ge3N4 on the Surface of Single-Crystal Germanium in Hydrazine VaporsIrakli Nakhutsrishvili, Revaz Kokhreidze, Giorgi KakhniashviliarticleOriental Journal Of Chemistry, 2022, Vol.38, No.(1): Pg. 211-214 ISSN: 0970-020X http://dx.doi.org/10.13005/ojc/380128EnglishState Targeted Program
On the kinetics of oxidation of chromium doped with ceriumO.I.Mikadze, O.G.Tkeshelashvili, R.G.Kokhreidze, T.D.Medoidze, I.G.NakhutsrishviliarticleGeorgia Chemical Journal, 19(1), 2019 Pg. 97-100 ISSN:1512-0686 RussianState Targeted Program
Percolation and the Josephson effect in high-Tc superconducting composites based on yttrium ceramicsJ. G. Sanikidze, R. G. Kokhreidze, and S. V. OdenovarticleLow Temperature Physics 32 (8), 846-848 (2006)Impact Factor: Scopus-0,998 ISSN:1063-777X https://doi.org/10.1063/1.2219507EnglishState Targeted Program
Influence of heat treatment conditions on the properties of superconducting ceramics of Bi (Pb) -Sr-Ca-Cu-O systemR. Kokhreidze, G. Mumladze, S. Odenov, N. Papunashvili, M. ChubabriaarticleProceedings of the Georgian Technical University # 4 (458), p. 100–103, 2005 GeorgianState Targeted Program
On the influence of magnetic and nonmagnetic impurities on the properties of yttrium-based high-Tc superconductorsJ. G. Sanikidze,  R G. Kokhreidze, A. N. Mestvirishvili, G. A. Mumladze, S. V. Odenov, N. A. Papunashvili, and M. Ya. ChubabriaarticleLow Temperature Physics 31 (6), 486-489 (2005)Impact Factor: Scopus-0,793 ISSN:1063-777X http://dx.doi.org/10.1063/1.1943532EnglishState Targeted Program
Influence of a boron oxide admixture on the magnetic and electrical properties of the high-Tc superconductor Bi1,7Pb0,3Sr2Ca2Cu4OyV. V. Jgamadze, R. G. Kokhreidze, N. G. Margiani, A. N. Mestvirishvili, S. V. Odenov, N. A. Papunashvili, G. A. Tsintsadze, and G. A. ShurgaiaarticleLow Temperature Physics 29 (12), 1036-1037 (2003)Impact Factor: Scopus-1,342 ISSN:1063-777X https://doi.org/10.1063/1.1630722EnglishState Targeted Program
The Investigation of Flux Creep in the Bi-Based HTSCS.Odenov, R.Kokhreidze, A.Mestvirishvili, G.Mumladze, N.PapunashviliarticleProc of the Institute of Cybernetics, 2002, vol.2, №1-2, p.171-173 ISSN 1512-1372 EnglishState Targeted Program
The Influence of Zn and Ni Addition on the Properties of Superconducting YBa2Cu3O7-δ­R.Kokhreidze, A.Mestvirishvili, S.Odenov, N.Papunashvili, J.Sanikidze, M.Chubabriaarticle Proc of the Institute of Cybernetics, 2002, vol.2, №1-2, p.164-170 ISSN 1512-1372 EnglishState Targeted Program

Physics of the condensed state of matter at low temperaturesKharkov, Ukraine200620–22 июня National Scientific Center "Kharkov Institute of Physics and Technology"Influence of impurities on the physical properties of HTSCs based on Y and Bioral

As is known, various impurities can be located both in interstices (Ag) and replace atoms in the main lattice. For example, Cu is replaced by Zn, Ni, Co, Fe, and Ga atoms. Depending on this, in the case of Ag there is some change in the physical properties, which makes it possible to study percolation phenomena in these compounds. In the case of substitution, the fundamental properties of these substances change. UVa2CusO7 samples were fabricated with various amounts of impurities—Zn, Ni, Co, Fe, Ga, and Ag. For all samples, the following were measured: low-frequency susceptibility in crossed ac and dc fields, the magnitude of the superconducting fraction, and the temperature dependence of the magnetic susceptibility in a weak magnetic field at various impurity concentrations. The experimental results show that non-magnetic impurities suppress superconductivity in U-HTSC more strongly than magnetic ones, which confirms the presence of pairs in them in the quantum d-state. The degree of suppression of superconductivity by magnetic impurities depends on the preferred localization of impurities in Cu(1) or Cu(2) cells. In the case of HTSC Bi2Ca2Sr2Cu30y, the suppression of superconductivity by nickel is greater than by zinc. At the same time, Zn acts weaker in Bi-HTSC than in Y-HTSC. This may indicate some difference in the quantum states of the pairs in these superconductors.

https://inis.iaea.org/collection/NCLCollectionStore/_Public/39/023/39023539.pdf

Web of Science: ციტირების ინდექსი-7, H ინდექსი-2
Scopus: ციტირების ინდექსი-5, H ინდექსი-2
Google Scholar: ციტირების ინდექსი-12, H ინდექსი-2

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Scientific editor of monographs in foreign languages

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P 6427Georgian National Intellectual Property Center SakpatentiGENikoloz Margiani, Zurab Adamia, Revaz Kokhreidze, Giorgi Mumladze, Natela Papunashvili, Dali DzinashviliHigh temperature conductive ceramics2016–02–11
P 6428Georgian National Intellectual Property Center SakpatentiGENikoloz Margiani, Zurab Adamia, Revaz Kokhreidze, Giorgi Mumladze, Natela Papunashvili, Dali DzinashviliHigh temperature conductive ceramics2016–02–11

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Research articles in high impact factor and local Scientific Journals


Influence of a boron oxide admixture on the magnetic and electrical properties of the high-Tc superconductor Bi1,7Pb0,3Sr2Ca2Cu4Oy Low Temperature Physics 29 (12), 1036-1037 (2003)State Target Program

The influence of an admixture of boron oxide B2O3B2O3 on the magnetic and electrical properties of a high-Tc superconducting ceramic with the nominal composition Bi1.

https://doi.org/10.1063/1.1630722
On the influence of magnetic and nonmagnetic impurities on the properties of yttrium-based high-Tc superconductors Low Temperature Physics 31 (6), 486-489 (2005)State Target Program

The influence of impurities on the physical properties of YBa2Cu3O7−δYBa2Cu3O7−δ superconducting ceramics is investigated. Samples of yttrium ceramics with different Ni, Zn, Co, Fe, and Ga impurity contents were prepared for this study, and the superconducting fraction, the low-frequency susceptibility in an external dc field, and the temperature dependence of the magnetic susceptibility in a weak ac field were measured for each sample. The last of these measurements permits a more precise determination of the critical temperature (the start of the transition) without regard for percolation effects. The experimental results show a stronger suppression of the superconducting state by nonmagnetic impurities, thus confirming the presence of d-state pairs in these superconductors. The degree of suppression of superconductivity by magnetic impurities depends on the preference of the impurities to locate in Cu(1) or Cu(2) sites.

http://dx.doi.org/10.1063/1.1943532
Percolation and the Josephson effect in high-Tc superconducting composites based on yttrium ceramics Low Temperature Physics 32 (8), 846-848 (2006)State Target Program

The interaction of hydrazine vapors with single-crystal germanium was studied by using the thermogravimetric method. The article considers the processes taking place on the surface of Ge up to the formation of Ge3N4 nitride, in particular, the accumulation of N2H4+H2O vapors and their etching with water vapor contained in hydrazine.

http://dx.doi.org/10.13005/ojc/380128

Publication in Scientific Conference Proceedings Indexed in Web of Science and Scopus