Novel mechanism of the negative thermal expansion of doped fullerite C₆₀

• Published in: Физика низких температур
• Date: 2010
• Main Authors: Strzhemechny, M.A., Legchenkova, I.V.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2010
• Subjects: Nanostructures and Impurity Centers in Cryogenic Environment
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/117035
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Novel mechanism of the negative thermal expansion of doped fullerite C₆₀ / M.A. Strzhemechny, I.V. Legchenkova // Физика низких температур. — 2010. — Т. 36, № 5. — С. 470-473. — Бібліогр.: 17 назв. — англ.

A model for an atomic impurity in an octahedral void of fullerite C₆₀ is suggested. The problem is solved in the spherical oscillator approximation, which is appropriate for the larger rare gas atoms. It is shown that such impurities can contribute to the negative thermal expansions at low temperatu...