Low-temperature heat capacity of fullerite C60 doped with nitrogen

Автор(и)

  • A.M. Gurevich B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • A.V. Terekhov B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • D.S. Kondrashev B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • A.V. Dolbin B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • D. Cassidy Australian Nuclear Science & Technology Organisation, Menai, NSW 2234, Australia
  • G.E. Gadd Australian Nuclear Science & Technology Organisation, Menai, NSW 2234, Australia
  • S. Moricca Australian Nuclear Science & Technology Organisation, Menai, NSW 2234, Australia
  • B. Sundqvist Department of Physics, Umea University, SE-901 87 Umea, Sweden

DOI:

https://doi.org/10.1063/1.2364490

Ключові слова:

heat capacity, doped fullerite, nitrogen, impurity effect.

Анотація

The heat capacity Cm of polycrystalline fullerite C60 doped with nitrogen has been measured in the temperature interval 2-13 K. The contributions to the heat capacity from translational lattice vibrations (Debye contribution), orientational vibrations of the C60 molecules (Einstein contribution), and from the motion of the N2 molecules in the octahedral cavities of the C60 lattice have been estimated. However, we could not find (beyond the experimental error limits) any indications of the first-order phase transformation that had been detected earlier in the dilatometric investigation of the orientational N2-C60 glass. A possible explanation of this fact is proposed.

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Опубліковано

2006-09-01

Як цитувати

(1)
Gurevich, A.; Terekhov, A.; Kondrashev, D.; Dolbin, A.; Cassidy, D.; Gadd, G.; Moricca, S.; Sundqvist, B. Low-Temperature Heat Capacity of Fullerite C60 Doped With Nitrogen. ФНТ 2006, 32, 1275-1277.

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