The Berkovich indentation loading curves of the initially only extraterrestrial available polymorphs of SiO2 are physically analyzed by applying the now well established FN-h3/2 plots for conical/pyramidal indentation...
the National Natural Science Foundation of China (41720104009 and 41802034);Natural Science Foundation of Jiangsu province, China (BK20180349).
As reported in our prior work, we have recovered microdiamonds and other unusual minerals, including pseudomorph stishovite, moissanite, qingsongite, native elements, metallic alloys, and some crustal minerals (i.e., ...
supported by the China Postdoctoral Science Foundation(119103S282);National Natural Science Foundation of China(41704090,41474040 and 41504050)
The X-discontinuity,which appears at the depth of approximately 300 km,is an important seismic interface with positive velocity contrasts in the upper mantle.Detecting its presence and topography can be useful to unde...
supported by the National Natural Science Foundation of China (Grant No. 10964003);the Natural Science Foundation of Gansu Province (Grant No. 096RJZA102);Specialized Research Fund for the Doctoral Program of Higher Education (GrantNo. 20096201120002);the China Postdoctoral Science Foundation (Grant No. 20100470886)
This paper systematically investigates the surface reconstruction processes and patterns on stishovite SiO2, HfO2 and rutile TiO2 (001) by using classical molecular dynamics. It is found that these three surfaces re...
Project supported by the Science and Technology Foundation of the China Academy of Engineering Physics (Grant No. 2008B0101001)
Using ab initio plane-wave pseudo-potential density functional theory method, the elastic constants and band structures of stishovite were calculated. The calculated elastic constants under ambient conditions agree we...
supported by the National Basic Research Program of China (No. 2003CB716503);China Geological Survey (No. 1212010610107);the National Natural Science Foundation of International Cooperation and Communication (No. 40610098);the Laboratory Foundation of the Chinese Academy of Geological Sciences (No. JB0703)
Silicon-bearing rutile has been found in chromitite from the Luobusa (罗布莎) ophiolite, Tibet. However, the extent of SiO2 solubility in rutile and the nature of its origin are still unclear. At high pressure, SiO2...