Abstract
The heat capacity of 1D chains of nitrogen and methane molecules (adsorbed in the outer grooves of bundles of closed-cap single-walled carbon nanotubes) has been studied in the temperature ranges 2–40 and 2–60 K, respectively. The temperature dependence of the heat capacity of 1D chains of nitrogen molecules below 3 K is close to a linear. It was found that the rotational heat capacity of methane molecules is a significant part of the total heat capacity of the chains throughout the whole investigated temperature range, whereas in the case of nitrogen, the librations are significant only above 15 K. The dependence of the heat capacity for methane below 10 K indicates the presence of a Schottky anomaly caused by the tunneling between the lowest energy levels of the CH 4 molecule rotational spectra. Characteristic features observed in the temperature dependence of the heat capacity of 1D methane crystals are also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 113-123 |
| Number of pages | 11 |
| Journal | Journal of Low Temperature Physics |
| Volume | 187 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 1 Apr 2017 |
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Keywords
- Heat capacity
- One-dimensional molecular chains
- Single-walled carbon nanotube bundles
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Condensed Matter Physics
Cite this
Heat Capacity of 1D Molecular Chains. / Bagatskii, M. I.; Barabashko, M. S.; Sumarokov, V. V.; Jeżowski, A.; Stachowiak, P.
In: Journal of Low Temperature Physics, Vol. 187, No. 1-2, 01.04.2017, p. 113-123.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heat Capacity of 1D Molecular Chains
AU - Bagatskii, M. I.
AU - Barabashko, M. S.
AU - Sumarokov, V. V.
AU - Jeżowski, A.
AU - Stachowiak, P.
PY - 2017/4/1
Y1 - 2017/4/1
N2 - The heat capacity of 1D chains of nitrogen and methane molecules (adsorbed in the outer grooves of bundles of closed-cap single-walled carbon nanotubes) has been studied in the temperature ranges 2–40 and 2–60 K, respectively. The temperature dependence of the heat capacity of 1D chains of nitrogen molecules below 3 K is close to a linear. It was found that the rotational heat capacity of methane molecules is a significant part of the total heat capacity of the chains throughout the whole investigated temperature range, whereas in the case of nitrogen, the librations are significant only above 15 K. The dependence of the heat capacity for methane below 10 K indicates the presence of a Schottky anomaly caused by the tunneling between the lowest energy levels of the CH 4 molecule rotational spectra. Characteristic features observed in the temperature dependence of the heat capacity of 1D methane crystals are also discussed.
AB - The heat capacity of 1D chains of nitrogen and methane molecules (adsorbed in the outer grooves of bundles of closed-cap single-walled carbon nanotubes) has been studied in the temperature ranges 2–40 and 2–60 K, respectively. The temperature dependence of the heat capacity of 1D chains of nitrogen molecules below 3 K is close to a linear. It was found that the rotational heat capacity of methane molecules is a significant part of the total heat capacity of the chains throughout the whole investigated temperature range, whereas in the case of nitrogen, the librations are significant only above 15 K. The dependence of the heat capacity for methane below 10 K indicates the presence of a Schottky anomaly caused by the tunneling between the lowest energy levels of the CH 4 molecule rotational spectra. Characteristic features observed in the temperature dependence of the heat capacity of 1D methane crystals are also discussed.
KW - Heat capacity
KW - One-dimensional molecular chains
KW - Single-walled carbon nanotube bundles
UR - http://www.scopus.com/inward/record.url?scp=85010987714&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85010987714&partnerID=8YFLogxK
U2 - 10.1007/s10909-016-1737-z
DO - 10.1007/s10909-016-1737-z
M3 - Article
VL - 187
SP - 113
EP - 123
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 1-2
ER -