Intercalation of fullerite C₆₀ with N₂ molecules. An investigation by x-ray powder diffraction

• Published in: Физика низких температур
• Date: 2007
• Main Authors: Galtsov, N.N., Prokhvatilov, A.I., Dolgova, G.N., Cassidy, D., Gadd, G.E., Moricca, S., Sundqvist, B.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2007
• Subjects: Динамика кристаллической решетки
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/120957
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Intercalation of fullerite C₆₀ with N₂ molecules. An investigation by x-ray powder diffraction / N.N. Galtsov, A.I. Prokhvatilov, G.N. Dolgova, D. Cassidy, G.E. Gadd, S. Moricca, B. Sundqvist // Физика низких температур. — 2007. — Т. 33, № 10. — С. 1159–1165. — Бібліогр.: 37 назв. — англ.

The lattice parameter a of fullerite C₆₀ intercalated with N₂ molecules is investigated in the temperature interval 6–295 K by x-ray diffraction. It is found that the interstitial molecular N₂ has a considerable effect on both the temperatures, Tc of the orientational phase transition and Tg of the orientational glass formation. Hysteresis of a(T) has been detected in the Tc and Tg regions, besides, the abrupt change in the volume over the region defining Tc. Complete intercalation of C₆₀ with N₂ molecules results in a 0.2% increase in the lattice parameter, which persists over the whole temperature range. Evidence is also obtained that the interstitial guest molecular N₂ induces a slight deformation of the cubic symmetry of the host C₆₀ lattice.