《表4 用双指数函数拟合得到的晶格内聚能曲线参数》

《表4 用双指数函数拟合得到的晶格内聚能曲线参数》   提示:宽带有限、当前游客访问压缩模式
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《铂的反演势的构建与研究(英文)》


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The first derivative equals to zero of the lattice cohesive energy with respect to the relative distance r,which leads to the nearest atom distance in equilibrium state of 0 K.The value of the nearest atom distance of Pt is r0Pt=0.27702 nm.The lattice structure of Pt is optimized by using the inversion potential function(GULP module),and the value of the nearest atom distance is r0Pt=0.27702 nm.Compared with the lattice constants r0Pt=0.27702 nm in the experiment[17],the cohesive energy function and the inversion potential function are both accurate and effective Physical quantities such as linear expansion coefficient,bulk modulus,and Grüneisen constant are calculated.Then the calculation results are compared with experimental data.