【摘 要】
:
High-pressure Raman studies at room temperature are performed on CCla up to 13 GPa. The Raman bands of the inteal modes (v2, v4 and v1) show entirely positive p
【机 构】
:
College of Physics,Jilin University,Changchun 130023
论文部分内容阅读
High-pressure Raman studies at room temperature are performed on CCla up to 13 GPa. The Raman bands of the inteal modes (v2, v4 and v1) show entirely positive pressure dependence. The slopes dw/dP of the inteal modes exhibit two sudden changes at 0.73 GPa and 7.13 GPa, respectively. A new lower frequency mode (225cm-1) appears at 3.03 GPa, and the splitting of v2, v3 and v4 occurs at about 7.13 GPa. Moreover, Raman spectra of Fermi resonance show that the relative position of the v1 + v4 combination and the v3 fundamental firstly interchanges corresponding to that at ambient pressure, then the v1 + va combination disappears in the gradual process of compression. It is indicated that the pressure-induced phase transition from CCl4 II to CCl4 III occurs at 0.73 GPa, and CCl4 III undergoes a transition to CCl4 IV below 3.03 GPa. Further CCl4 IV transforms in a new high-pressure phase at about 7.13 GPa, and the symmetry of the new high-pressure phase is lower than that of CCl4 IV. All the transitions are reversible during decompression.
其他文献
We investigate the polarization change of partially coherent electromagnetic vortex beams propagating in tur-bulent atmosphere. It is shown that the polarizatio
“非遗”项目解读rn徽剧是我国重要的地方戏曲声腔,主要流行于安徽省境内和江西省婺源县一带.徽剧迄今已有300多年历史,在我国戏曲发展史上曾起过重要作用,不仅孕育了京剧,而
在水稻培体育种中沿用的花药培养基,成分复杂,包括大量元素、微量元素、有机生长物质、刺激素等二十多种化学药品。有些药品来源少,价格昂贵,不易获得。一九七五年以来,我们
The modification of localised surface plasmons of photoluminescence properties of ZnO is studied.It is found that the ultraviolet emission is drastically enhanc
A trajectory following the repelling branch of an equilibrium or a periodic orbit is called a canards solution. Using a continuation method, we find a new type
据2016年10月10日媒体报道,中国运载火箭技术研究院的专家日前在墨西哥瓜达拉哈拉举行的第67届国际宇航大会上称,该院已设计出一款简单的整体式太空飞机,其设计能增加搭载乘客的数量,可在一日内搭载最多20名乘客飞抵太空边缘,然后返回地面。此前的7月31日,来自中国航天科技集团的消息说,我国“组合动力飞行器”项目已经开始研制,这就意味着,普通人上太空的成本和门槛将有望大大降低。此外,9月12日在武汉
扬麦5号(原名扬鉴二)是里下河地区农科所用9—16[系(南大2419×胜利)×阿夫选系]_4作母本,以意大利小麦St1472/506变异单株作父本杂交,于1980年育成。属春性、中熟类型。
Y
A series of cubic phase Co3O4 nano-leaves were prepared via a combined approach of solution reaction and calcination.According to x-ray diffraction and electron
We calculate the binding energy per baryon of the h hypeuclei systematically, using the relativistic mean field theory (RMF) in a static frame. Some similar pro
近两年世界上主要的视频设备生产厂商纷纷推出4K显示设备,包括电视机、电脑显示器、投影机等。索尼公司最近展出的4K家用投影机采用了超短距离投影技术和非常规的设计思路,将