Superconducting and normal state properties of heavily hole-doped diamond synthesized at high pressure

Autor: V.A. Sidorov, E.A. Ekimov, A.V. Rakhmanina, S.M. Stishov, E.D. Bauer and J.D. Thompson

Publikováno v: Science and Technology of Advanced Materials, Vol 7, Iss S1, p S7 (2006)

Diamonds, synthesized at high pressures and high temperatures in the presence of boron, are heavily hole-doped by incorporation of boron into the diamond lattice. These diamonds become superconducting below Tc=2–9 K. Synthesis in the systems B-C an

Externí odkaz: https://doaj.org/article/d9ff8cd00ba54feaa4ac2898e9b39400

Synergistic Effect of Fluorine and Hydrogen on Processes of Graphite and Diamond Formation from Fluorographite-Naphthalene Mixtures at High Pressures

Autor: Valery N. Khabashesku, V. N. Agafonov, Valery A. Davydov, A.V. Rakhmanina

Publikováno v: The Journal of Physical Chemistry C. 115:21000-21008

Pressure–temperature-induced transformations of fluorographite CF1.1 and homogeneous mixtures of CF1.1 with naphthalene under static pressure of 8.0 GPa have been investigated by X-ray diffraction, scanning and transmission electron microscopies, a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::91c924d24b56ce32338349f5b5ba207d
https://doi.org/10.1021/jp206904t

Fluorination of pressure-polymerized C60 phases

Autor: Lei Zhang, John L. Margrave, A.V. Rakhmanina, Zhenning Gu, V. N. Agafonov, Valery N. Khabashesku, Valery A. Davydov

Publikováno v: Carbon. 43:2989-3001

The reactivity of O-, T- and R-phases of the high pressure–high temperature (HPHT) polymerized C60 towards gaseous fluorine in the temperature range of 50–250 °C was investigated. The reaction products were characterized by FTIR, powder X-ray di

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ddd2ef4a1022bc79737eae094d28a7c
https://doi.org/10.1016/j.carbon.2005.06.012

Influence of high pressure on the ferromagnetic transition temperature of CrO2

Autor: A.V. Rakhmanina, O.A. Morya, Vladimir A. Sidorov

Publikováno v: Solid State Communications. 139:360-362

The shift of the Curie temperature of CrO2 with pressure was determined by ac-susceptibility measurements under hydrostatic pressure up to 5 GPa. These experiments show that ferromagnetism of CrO2 is suppressed at a rate d T c / d P = − 4.4 K / GPa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6594a047be73fbae60d83144402e3a07
https://doi.org/10.1016/j.ssc.2006.06.025

EPR Study of the Thermal Depolymerization Process of C60 Polymerized Phases

Autor: V. A. Davydov, A.V. Rakhmanina, Viatcheslav N. Agafonov, E. A. Zhilinskaya

Publikováno v: Fullerenes, Nanotubes and Carbon Nanostructures
Fullerenes, Nanotubes and Carbon Nanostructures, Taylor & Francis, 2012, 20 (4-7), pp.357--360. ⟨10.1080/1536383X.2012.655180⟩

International audience; The EPR method has been used to investigate thermal depolymerization processes of the tetragonal (T) and rhombohedral (R) 2D-polymerized phases of C60 in vacuum and in air. The behavior of paramagnetic centers (PCs) with doubl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80d87c5282d0e61caa3e4bbe7320a275
https://hal.archives-ouvertes.fr/hal-01716456