电子理论在材料科学中的应用

Application of electron theories in materials science

介绍密度泛函理论(DFT)、余氏理论(EET)和程氏理论(TFDC),综述DFT在功能材料、结构材料和表面科学等领域中的应用,EET在金属材料和陶瓷材料等领域中的应用,以及TFDC在晶体中位错稳定性、簿膜内应力、纳米材料等领域中的应用,阐述了3种电子理论的相互关系和应用特点,展望3种电子理论的应用前景,指出三者的有机结合是电子理论发展的有效途径。

Density functional theory （DFT）, YU Rui-huang theory （Empirical Electron Theory of Solids and Molecules, EET） and CHENG Kai-jia theory （Modified Thomas-Fermi-Dirac electron theory, TFDC） were briefly introduced. The application of DFT in the area of functional materials, structural materials, surface science and so on, the application of EET in the area of metal alloys and ceramics and the application of TFDC in the area of dislocation stability, internal stresses inside thin films and nanomaterials were emphasized. The correlations among the three kinds of electron theories and their respective characteristics of application were described. Moreover, the conclusion with personal views towards future applications of them were put forward and their organic integration was proposed as an effective way to the development of electron theories.