INSITU OBSERVATION OF THE PRESSURE-INDUCED AMORPHIZATION OF GEO2

被引：3

作者：

KAWASAKI, S ^{[1
]}

TAKUBO, H ^{[1
]}

YAMANAKA, T ^{[1
]}

机构：

[1] OSAKA UNIV,COLL GEN EDUC,TOYONAKA,OSAKA 560,JAPAN

来源：

PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES | 1992年 / 68卷 / 09期

关键词：

GEO2; AMORPHIZATION; HIGH PRESSURE;

D O I：

10.2183/pjab.68.151

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In order to study the stability field of GeO2 under high pressure at room temperature, an in situ observation was made by using a diamond anvil pressure cell, an optical microscope and a high speed VTR. At about 6.5 GPa, a transparent single-crystal of alpha-quartz type GeO2 quickly changed to a translucent material which was found to be X-ray amorphous. The loss of transparency induced by the transformation is attributed to the pulverization due to the large volume change (approximately 10%), which causes the increase of refractive index and introduces the imperfection into the single-crystal.

引用

页码：151 / 154

页数：4

共 14 条

[1]

FINCH CB, 1968, AM MINERAL, V53, P1394

[2] PRESSURE MEASUREMENT MADE BY UTILIZATION OF RUBY SHARP-LINE LUMINESCENCE [J].