Equation of state and structural phase transition in FeBO3 at high pressure

被引：33
|
作者：
Gavriliuk, AG [1 ]
Trojan, IA
Boehler, R
Eremets, M
Zerr, A
Lyubutin, IS
Sarkisyan, VA
机构：
[1] Russian Acad Sci, Inst High Pressure Phys, Troitsk 142092, Moscow Oblast, Russia
[2] Max Planck Inst Chem, D-55020 Mainz, Germany
[3] Tech Univ Darmstadt, FB Mat & Geowissensch, FG Disperse Feststoffe, D-64287 Darmstadt, Germany
[4] Russian Acad Sci, AV Shubnikov Crystallog Inst, Moscow 117333, Russia
来源：
JETP LETTERS | 2002年 / 75卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
61.50.Ks; 64.70.Kb; 64.30.+t; 62.50.+p;
D O I：
10.1134/1.1463109
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The evolution of X-ray diffraction patterns in FeBO3 under high pressures up to 63 GPa has been investigated at room temperature in a diamond anvil cell. A structural phase transition at a pressure of 53 +/- 2 GPa was found for the first time. The transition is of the first-order type with a hysteresisless drop of the reduced unit cell volume of about 8.6%. Apparently, the transition is isostructural. At pressures below the transition, the equation of state for FeBO3 was fitted. In the third-order approximation of the Birch-Murnagan equation of state, the bulk modulus K and its first pressure derivative K' were found to be 255 +/- 25 GPa and 5.0 +/- 1.2, respectively. (C) 2002 MAIK "Nauka / Interperiodica".
引用
收藏
页码：23 / 25
页数：3
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