The influence of dimerization on the orientational phase transition in the C60 fullerite

被引：5
|
作者：
Kondrin, MV [1 ]
Lyapin, AG [1 ]
Popova, SV [1 ]
Brazhkin, VV [1 ]
机构：
[1] Russian Acad Sci, Vereshchagin Inst High Pressure Phys, Troitsk 142190, Moscow Oblast, Russia
来源：
PHYSICS OF THE SOLID STATE | 2002年 / 44卷 / 03期
关键词：
D O I：
10.1134/1.1462668
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The influence of dimerization of a C-60 fullerite subjected to thermobaric treatment on the change in linear dimensions upon the orientational phase transition is investigated. It is demonstrated that the effects associated with the dimerization of fullerites substantially affect the thermal expansion coefficient only for samples synthesized under the conditions P-syn greater than or equal to 8 GPa and T-syn greater than or equal to 70degreesC (where P-syn and T-syn are the pressure and temperature of the synthesis, respectively). These effects bring about a smearing of the phase transition, a shift of the transition toward low temperatures, and a decrease in the volume jump. (C) 2002 MAIK "Nauka / Interperiodica".
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收藏
页码：447 / 449
页数：3
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