HIGH-PRESSURE X-RAY-DIFFRACTION STUDY OF DIASPORE

被引：23

作者：

MAO, HK ^{[1
]}

SHU, JF ^{[1
]}

HU, JZ ^{[1
]}

HEMLEY, RJ ^{[1
]}

机构：

[1] CARNEGIE INST WASHINGTON,CTR HIGH PRESSURE RES,WASHINGTON,DC 20015

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 90卷 / 08期

关键词：

D O I：

10.1016/0038-1098(94)90053-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Effects of pressure on lattice parameters and molar volume of diaspore were studied to 25.5 GPa at 300 K by polycrystalline X-ray diffraction techniques. The pressure-volume data fit with a second-order Birch-Murnaghan equation of state give a bulk modulus K0 = 167.5 GPa. The bulk modulus is twice the previously reported, but unsubstantiated, value of K0 = 85 GPa by Ruoff and Vanderborgh [Phys. Rev. Lett. 66, 754 (1991)]. Thermodynamic calculation indicates that hydrogen and ruby are stable relative to diaspore and aluminum to pressures above 200 GPa.

引用

页码：497 / 500

页数：4

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