Synthesis of high-pressure van der Waals compounds and its elastic properties

高压货车范德华化合物显示出许多基本性质，以了解材料科学。在这里，我们第一次成功地确定了固体Ar在高达70 GPa的压力下的弹性性质（声速和3个弹性常数）;现在，在美国物理评论快报上发表。此外，我们还成功地在金刚石砧高压室中合成了单晶Ar水合物。这种材料是典型的货车范德瓦尔斯化合物。我们测量了拉曼和布里渊散射，并分别测定了结构II型水合物和弹性性质，这些结果将作为2001年7月在中国北京举行的国际高压科学与技术会议的特邀报告发表。

High-pressure van der Waals compounds show many fundamental properties to understanding material science. Here, we have for the first time succeeded to determine elastic properties (sound velocities and 3 elastic constants) of solid Ar at pressures up to 70 GPa ; now, in printing on U.S.Physical Review Letters.Furthermore, we have successfully synthesized a single-crystal Ar hydrates in a diamond anvil high-pressure cell. This material is a typical van der Waals compound. We measured Raman and Brillouin scatterings, and determined the structure II type hydrate and elastic properties, respectively.These results will be presented, as the invited lecture, on International Conference on High Pressure Science and Technology on July, 2001 at Beijing, China.