Phase transitions in uranium dioxide at high pressures and temperatures

被引：2
|
作者：
Molodets, AM [1 ]
Fortov, VE [1 ]
机构：
[1] Russian Acad Sci, Inst Chem Phys, Chernogolovka 142432, Moscow Region, Russia
来源：
JETP LETTERS | 2004年 / 80卷 / 03期
关键词：
64.70.−p;
D O I：
10.1134/1.1808844
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The melting curve is plotted for uranium dioxide with fluorite structure in a pressure range from -2.5 to +100 GPa. This curve has a peak at the point 3348 K, 6 GPa, and has a negative derivative at high pressures. The pressure corresponding to a polymorphic transition of uranium dioxide (37 GPa) at a temperature of 1015 K is determined. The slope of the equilibrium curve of the polymorphic transition in UO2 in the temperature range 300-1000 K is -56 K/GPa. (C) 2004 MAIK "Nauka/Interperiodica".
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页码：172 / 175
页数：4
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