Zobrazeno 1 - 10
of 12
pro vyhledávání: '"O. F. Yagafarov"'
Publikováno v:
High Pressure Research. 33:191-195
The structure of liquid gallium has been studied from 340 to 800 K at 4.2(1) GPa by the energy-dispersive X-ray diffraction technique. The analysis of the structure factor S(Q) and the radial distribution function g(r) shows that the anisotropic loca
Autor:
Matthew G. Tucker, A. G. Lyapin, Andrew Dominic Fortes, Vadim V. Brazhkin, E. L. Gromnitskaya, Ian G. Wood, O. F. Yagafarov
Publikováno v:
Physics and Chemistry of Minerals. 40:271-285
We present an ultrasonic and neutron powder diffraction study of crystalline MgSO4·7H2O (synthetic epsomite) and MgSO4·7D2O under pressure up to ~3 GPa near room temperature and up to ~2 GPa at lower temperatures. Both methods provide complementary
Autor:
A. G. Lyapin, O. F. Yagafarov, M. V. Kondrin, E. L. Gromnitskaya, Vadim V. Brazhkin, A. V. Bogdan
Publikováno v:
Fullerenes, Nanotubes and Carbon Nanostructures. 18:406-411
Here we present an improved ultrasonic study of the elastic moduli of polycrystalline fullerites C60 and C70 in the temperature range 77–340 K at pressures up to 2.5 GPa. The elastic properties of these fullerites at normal conditions were accurate
Publikováno v:
High Pressure Research. 30:51-54
We present an ultrasonic study of the elastic moduli of epsomite (MgSO4·7H2O) in the temperature range 77–295 K at pressures up to 2.8 GPa. Elastic properties of epsomite MgSO4·7D2O at room temperature conditions (p=0–2.8 GPa) were also measure
Publikováno v:
Journal of Experimental and Theoretical Physics. 107:818-827
The elastic properties of gallium, such as the bulk modulus B, the shear modulus G, and the Poisson’s ratio σ, are investigated and the relative change in the volume is determined in the stability regions of the Ga I, Ga II, and liquid phases at p
Publikováno v:
Fullerenes, Nanotubes and Carbon Nanostructures. 16:499-506
Here we present the ultrasonic study of elastic properties of the molecular fullerite C 60 in the temperature range 80-300 K at pressures up to 1.4 GPa. We have determined for the first time the pressure dependencies of shear modulus and Poisson's ra
Autor:
Vadim V. Brazhkin, O. F. Yagafarov, A. G. Lyapin, E. L. Gromnitskaya, Svetlana Popova, O. V. Stal’gorova
Publikováno v:
Journal of Experimental and Theoretical Physics Letters. 80:597-601
The phase diagram of methanol is studied by an ultrasonic technique over the temperature range 90–290 K at pressures up to 1.2 GPa. The pressure and temperature dependence of the velocity of longitudinal ultrasonic waves and the density of crystall
Publikováno v:
Physical Review B. 86
Publikováno v:
Physical Review Letters. 98
We present the ultrasonic study of gallium (Ga I) under high pressure up to 1.7 GPa, including the measurements of the density and elastic properties during phase transitions to Ga II and to a liquid state. The observed large drop of both bulk and sh
Autor:
S. G. Lyapin, A. G. Lyapin, Grégory Tricot, O. F. Yagafarov, Yoshinori Katayama, M. V. Kondrin, Shinji Kohara, Jaakko Akola, Vadim V. Brazhkin
Publikováno v:
Journal of Materials Chemistry. 21:10042
P2O5 compound is an archetypical glass-forming oxide with a record-high hygroscopicity, which makes both the study and potential industrial uses of the glass extremely difficult. We found that the quenching from the P2O5 melt under ultrahigh pressure