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Negative thermal expansion of fulleriteC60at liquid helium temperatures

 

作者: A. N. Aleksandrovskii,   V. B. Esel’son,   V. G. Manzhelii,   B. G. Udovidchenko,   A. V. Soldatov,   B. Sundqvist,  

 

期刊: Low Temperature Physics  （AIP Available online 1997）
卷期: Volume 23, issue 11  

页码: 943-946

 

ISSN:1063-777X

 

年代: 1997

 

DOI:10.1063/1.593498

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The thermal expansion of fulleriteC60has 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 Kthe 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.

 

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