Abstract
The nature of the linear term in the heat capacity of fullerite C60 has been investigated. The low-temperature dependence of the sound velocity has been determined from the data of the heat capacity at temperatures below 4 K. A model of the dynamic configuration excitations (DCE) is proposed to describe the contribution of the linear term in heat capacity and calculate the dependence of sound velocity. It is shown that this model, apparently, adequately describes the dynamics of cluster formations of the short-range order in fullerite C60 by taking into account excitations of both the atomic and electronic subsystems. In the framework of this model, it is shown that low-energy tunnel states that are located at the boundaries of C60 domains make a dominant contribution to the low-temperature effects in the heat capacity and sound velocity of C60.
| Original language | English |
|---|---|
| Pages (from-to) | 661-666 |
| Number of pages | 6 |
| Journal | Fullerenes Nanotubes and Carbon Nanostructures |
| Volume | 25 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2 Nov 2017 |
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Keywords
- Fullerite
- Heat Capacity
- Low Temperature
- Sound Velocity
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Physical and Theoretical Chemistry
- Organic Chemistry
Cite this
Low temperature heat capacity and sound velocity in fullerite C60 orientational glasses. / Barabashko, M. S.; Rezvanova, A. E.; Ponomarev, A. N.
In: Fullerenes Nanotubes and Carbon Nanostructures, Vol. 25, No. 11, 02.11.2017, p. 661-666.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Low temperature heat capacity and sound velocity in fullerite C60 orientational glasses
AU - Barabashko, M. S.
AU - Rezvanova, A. E.
AU - Ponomarev, A. N.
PY - 2017/11/2
Y1 - 2017/11/2
N2 - The nature of the linear term in the heat capacity of fullerite C60 has been investigated. The low-temperature dependence of the sound velocity has been determined from the data of the heat capacity at temperatures below 4 K. A model of the dynamic configuration excitations (DCE) is proposed to describe the contribution of the linear term in heat capacity and calculate the dependence of sound velocity. It is shown that this model, apparently, adequately describes the dynamics of cluster formations of the short-range order in fullerite C60 by taking into account excitations of both the atomic and electronic subsystems. In the framework of this model, it is shown that low-energy tunnel states that are located at the boundaries of C60 domains make a dominant contribution to the low-temperature effects in the heat capacity and sound velocity of C60.
AB - The nature of the linear term in the heat capacity of fullerite C60 has been investigated. The low-temperature dependence of the sound velocity has been determined from the data of the heat capacity at temperatures below 4 K. A model of the dynamic configuration excitations (DCE) is proposed to describe the contribution of the linear term in heat capacity and calculate the dependence of sound velocity. It is shown that this model, apparently, adequately describes the dynamics of cluster formations of the short-range order in fullerite C60 by taking into account excitations of both the atomic and electronic subsystems. In the framework of this model, it is shown that low-energy tunnel states that are located at the boundaries of C60 domains make a dominant contribution to the low-temperature effects in the heat capacity and sound velocity of C60.
KW - Fullerite
KW - Heat Capacity
KW - Low Temperature
KW - Sound Velocity
UR - http://www.scopus.com/inward/record.url?scp=85037734959&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85037734959&partnerID=8YFLogxK
U2 - 10.1080/1536383X.2017.1391225
DO - 10.1080/1536383X.2017.1391225
M3 - Article
VL - 25
SP - 661
EP - 666
JO - Fullerenes Nanotubes and Carbon Nanostructures
JF - Fullerenes Nanotubes and Carbon Nanostructures
SN - 1536-383X
IS - 11
ER -