l*******s
发帖数: 7316 | 10 I am sorry. I did not realize you are asking about liquid.
Here is a example of liquid.
If you want limit to 0-4C, I do not know.
Negative thermal expansion of fullerite C60 at liquid helium temperatures
A. N. Aleksandrovskii1, V. B. Esel’son1, V. G. Manzhelii1, B. G.
Udovidchenko1, A. V. Soldatov2, and B. Sundqvist2
1B. Verkin Institute for Low Temperature Physics and Engineering, National
Academy of Sciences of Ukraine, 47, Lenin Ave., 310164, Kharkov, Ukraine
2Umea University, Department of Experimental Physics, 90187 Umea, Sweden
The thermal expansion of fullerite C60 has been measured in the temperature
range 2–9 K. A compacted fullerite sample with a diameter of about 6 mm and
height of 2.4 mm was used. It was found that at temperatures below ～ 3.4&#
8202;K the linear thermal expansion coefficient becomes negative. At
temperatures above 5 K our results are in good agreement with the available
literature data. A qualitative explanation of the results is proposed. ©
; 1997 American Institute of Physics. |
