Zobrazeno 1 - 10
of 239
pro vyhledávání: '"L. S. Kashevarova"'
Autor:
V. A. Davydov, L. S. Kashevarova, V. I. Kulakov, A. V. Dzyabchenko, A. V. Rakhmanina, B. Narymbetov, V. N. Agafonov
Publikováno v:
Fullerenes, Nanotubes and Carbon Nanostructures. 12:275-279
The possibilities of single crystals synthesis in conditions of nonisotropic one‐axis contraction were studied. As a result of the work the single crystals of the tetragonal polymerized phase of C60 without orientational domains were obtained. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ef3230ecbe70eb115fd5f95abe113c
https://doi.org/10.1081/fst-120027169
https://doi.org/10.1081/fst-120027169
Autor:
A.G. Bogachev, Vladimir M. Senyavin, A. V. Dzyabchenko, E.B. Stukalin, L. S. Kashevarova, A. V. Rakhmanina, V. N. Agafonov, Valery A. Davydov, Alexey A. Popov, Mikhail V. Korobov
Publikováno v:
Carbon. 43:954-961
Differential scanning calorimetry and IR-spectroscopy have been used to study the depolymerization of the 2D tetragonal (T) polymerized phase of C60 at p = 1 atm. The depolymerization enthalpy obtained was 17.7 ± 1.7 kJ per mole of C60. Experimental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d03acaa454731d1dd9be52c04cb70f7d
https://doi.org/10.1016/j.carbon.2004.11.026
https://doi.org/10.1016/j.carbon.2004.11.026
Publikováno v:
Thermochimica Acta. 399:99-108
By adiabatic vacuum calorimetry the temperature dependence of heat capacity for crystalline dimer of fullerene C 60 has been determined in the range 6–340 K at standard pressure. Between 46 and 56 K, a glass-like transition of the dimer, the nature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21960447a4c62d95918b7b3f2c87ddcc
https://doi.org/10.1016/s0040-6031(02)00450-1
https://doi.org/10.1016/s0040-6031(02)00450-1
Autor:
N. N. Smirnova, A. V. Rakhmanina, V. A. Davydov, B. V. Lebedev, L. S. Kashevarova, A. V. Markin
Publikováno v:
Russian Chemical Bulletin. 52:862-868
The temperature dependences of the heat capacity C p° = f(T) were studied in an adiabatic vacuum calorimeter for the orthorhombic, tetragonal, and rhombohedral polymeric C60 phases in the 7—340 K temperature interval with an error of ∼0.2%. Comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f3ffee634b93530692a25f572630483
https://doi.org/10.1023/a:1024487923259
https://doi.org/10.1023/a:1024487923259
Autor:
L. S. Kashevarova, V. A. Davydov, A. V. Dzyabchenko, B. Narymbetov, A. V. Rakhmanina, V. I. Kulakov, Viatcheslav N. Agafonov, René Céolin
Publikováno v:
Chemical Physics Letters. 367:157-162
Single crystals of the 2D polymerized tetragonal phase of C60 without orientational domains were obtained under high pressure and high temperature. The crystal structure of this phase was resolved using single crystal X-ray diffraction data. The cell
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d21de747a16de5e896b525a926c608a
https://doi.org/10.1016/s0009-2614(02)01526-9
https://doi.org/10.1016/s0009-2614(02)01526-9
Autor:
L. S. Kashevarova, V. A. Davydov, Tatiana L. Makarova, Bertil Sundqvist, A.V. Rakhmanina, M. E. Gaevski, Peter Scharff, Eva Olsson
Publikováno v:
Carbon. 39:2203-2209
The electrical properties of two-dimensionally polymerized C60 fullerenes were studied. Fullerene matrices consisting of randomly oriented domains are compared to the highly-oriented rhombohedral phase. The conductivity of the randomly oriented polym
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::424e25a8b4f7d986815a83beb9273561
https://doi.org/10.1016/s0008-6223(01)00036-7
https://doi.org/10.1016/s0008-6223(01)00036-7
Autor:
L. S. Kashevarova, A. V. Rakhmanina, Vladimir M. Senyavin, R. Céolin, O. P. Pronina, V. N. Agafonov, N.N. Oleynikov, Henri Szwarc, Hassan Allouchi, Valery A. Davydov
Publikováno v:
Chemical Physics Letters. 333:224-229
The kinetics of pressure-induced dimerization of fullerite C60 at 1.5 GPa in the 373–473 K temperature interval was studied by X-ray diffraction, infrared and Raman spectroscopy. Kinetic curves of the dimerization reaction in the fcc and sc phases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d8be199c2e73fc6f01d1bf22ca2533e
https://doi.org/10.1016/s0009-2614(00)01379-8
https://doi.org/10.1016/s0009-2614(00)01379-8
Autor:
A. V. Rakhmanina, L. S. Kashevarova, V. N. Agafonov, O. P. Pronina, Vladimir M. Senyavin, Henri Szwarc, N. N. Oleinikov, V. A. Davydov
Publikováno v:
Journal of Experimental and Theoretical Physics Letters. 72:557-560
Dimerization kinetics was studied for fullerene C60 by IR spectroscopy at a pressure of 1.5 GPa in the temperature range 373–473 K. The kinetic curves for the formation of a dimer (C60)2 were obtained using its analytical IR band at 796 cm−1. Und
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7a859107ae91748ab46c682d12c89d3
https://doi.org/10.1134/1.1348480
https://doi.org/10.1134/1.1348480
Autor:
Viatcheslav N. Agafonov, Vladimir M. Senyavin, V. A. Davydov, Henri Szwarc, René Céolin, L. S. Kashevarova, Hassan Allouchi, A. V. Rakhmanina
Publikováno v:
Physical Review B. 61:11936-11945
Comparative studies of the infrared (IR) and Raman spectra of the orthorhombic, tetragonal, and rhombohedral pressure-polymerized phases of ${\mathrm{C}}_{60}$ as well as the pressure-dimerized state have been performed at ambient conditions. The ten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bce0a54b70e85f89acfdc0fa6b72ce9
https://doi.org/10.1103/physrevb.61.11936
https://doi.org/10.1103/physrevb.61.11936
Autor:
Valery A. Davydov, A. V. Rakhmanina, G Sagon, Vladimir M. Senyavin, V. N. Agafonov, L. S. Kashevarova, Henri Szwarc, René Céolin, Hassan Allouchi
Publikováno v:
Chemical Physics Letters. 313:421-425
The Raman and IR spectra of pure polymerized phases of C 60 obtained at high pressure and temperature were investigated. Our data showed that some previous spectra were obtained from a mixture of different polymeric states. Determination of the chara
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38c402c74ba68c63d536f6d3264e09cf
https://doi.org/10.1016/s0009-2614(99)01050-7
https://doi.org/10.1016/s0009-2614(99)01050-7