Open AccessОсобенности зависимости рамановских спектров кластерных структур трехмерно-полимеризованного фуллерита от давления
Author(s) -
Ф.С. Хоробрых,
В.Д. Чуркин,
М.Ю. Попов
Publication year - 2022
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2022.02.51933.207
Subject(s) - hydrostatic pressure , materials science , polymerization , hydrostatic equilibrium , diamond , thermodynamics , composite material , polymer , physics , quantum mechanics
We study the effect of high hydrostatic pressure on 3D polymerized fullerite C60. We do not observe further structural changes until 150 GPa after a formation of 3D C60 under hydrostatic pressure 28 GPa. It is experimentally shown that the obtained samples consist of different clusters formed by sp3 bonds with a different set of force constants, the values of which vary within 20% and exceed the diamond force constants by the factor of 1.3–1.5. The influence of the exposure of laser radiation on the process of 3D polymerization of C60 under pressure was found. Increasing of the exposure by the factor of 15 leads to a decrease in the bulk modulus of 3D C60 from 610 GPa to 504 GPa.