NEGATIVE THERMAL-EXPANSION OF FULLERITE C-60 AT LIQUID-HELIUM TEMPERATURES

Authors
ALEKSANDROVSKII AN ESELSON VB MANZHELII VG UDOVIDCHENKO BG SOLDATOV AV SUNDQVIST B
Citation
An. Aleksandrovskii et al., NEGATIVE THERMAL-EXPANSION OF FULLERITE C-60 AT LIQUID-HELIUM TEMPERATURES, Low temperature physics, 23(11), 1997, pp. 943-946
Citations number
26
Journal title
Low temperature physics → ACNP
ISSN journal
1063777X
Volume
23
Issue
11
Year of publication
1997
Pages
943 - 946
Database
ISI
SICI code
1063-777X(1997)23:11<943:NTOFCA>2.0.ZU;2-8
Abstract
The thermal expansion of fullerite C-60 has been measured in the tempe rature range 2-9 K. A compacted fullerite sample with a diameter of ab out 6 mm and height of 2.4 mm was used. It was found that at temperatu res below similar to 3.4 K the linear thermal expansion coefficient be comes negative, At temperatures above 5 K our results are in good agre ement with the available literature data. A qualitative explanation of the results is proposed. (C) 1997 American Institute of Physics. [S10 63-777X(97)01611-3].