【摘 要】
：
Using a pseudopotential plane-waves method,we calculate the phonon dispersion curves,thermodynamic properties,and hardness values of α-CdP2 andβ-CdP2 under hi
【机 构】
：
The High Pressure Research Center of Science and Technology, Zhengzhou University of Light Industry,
论文部分内容阅读
Using a pseudopotential plane-waves method,we calculate the phonon dispersion curves,thermodynamic properties,and hardness values of α-CdP2 andβ-CdP2 under high pressure.From the studies of the phonon property and enthalpy difference curves,we discuss a phase transform from β-CdP2 to α-CdP2 in a pressure range between 20 GPa and 25 GPa.Then,the thermodynamic properties,Debye temperatures,and heat capacities are investigated at high pressures.What is more,we employ a semiempirical method to evaluate the pressure effects on the hardness for these two crystals.The results show that the hardness values of both α-CdP2 and β-CdP2 increase as pressure is increased.The influence mechanism of the pressure effect on the hardness of CdP2 is also briefly discussed.
其他文献
Based on the passive spectroscopy,the Dα atomic emission spectra in the boundary region of the plasma have been measured by a high resolution optical spectrosc
For underwater drag reduction,one promising idea is to form a continuous gas or discrete bubbly layer at the submerged surface.Owing to the lower viscosity of g
纵观西洋绘画空间表现的演变,从传统绘画透视学的空间表现、光影明暗的体量空间表现、色彩冷暖的空间表现到现代主义有意味的空间形态表现,西洋绘画在其独特的文化背景和美学
The magnetomechanical behavior of single-crystal Galfenol alloy was found to be strongly dependent on the loading paths.An energy-based anisotropic domain rotat
1品种来源花940小麦是河北省农科院粮油作物研究所用京双9号作母本，宝丰7228作父本，有性杂交后的F1代花药，在离体条件下诱导出单倍体植株，人工加信后获得纯合二倍体并结实，田间早
本文对不结球白菜的抗霜霉病的生理生化机制及其分子标记做了相关的研究，其中重要内容包括以下几个方面： 1．通过人工接种方法对不结球白菜的抗感两个亲本、F1以及F2进行了抗
Through two methods,we investigate the solitary and periodic wave solutions of the differential equation describing a nonlinear coupled two-dimensional discrete