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Structure and chemical bond characteristics of LaB_6

机译:LaB_6的结构和化学键特征

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The structure and chemical bond characteristics of LaB6 have been achieved by means of the densityfunctional theory using the state-of-the-art full-potential linearized augmented plane wave (FPLAPW)method, which are implemented within the EXCITING code. The results show our optimized latticeconstant a (4.158 A), parameter z (0.1981) and bulk modulus B (170.4 GPa) are in good agreement withthe corresponding experimental data. Electron localization function (ELF) shows the La-La bond mainlyis ionic bond, La-B bond is between ionic and covalent bond while the covalent bond between thenearest neighbor B atoms (B2 and B3) is a little stronger than that between the nearer neighbor B atoms(B1 and B4).
机译:LaB6的结构和化学键特征已经通过使用最新的全电势线性化增强平面波(FPLAPW)方法的密度泛函理论实现,该方法在EXCITING代码中实现。结果表明,我们优化的晶格常数a(4.158 A),参数z(0.1981)和体积模量B(170.4 GPa)与相应的实验数据吻合良好。电子定位功能(ELF)显示La-La键主要是离子键,La-B键在离子键与共价键之间,而最近的相邻B原子(B2和B3)之间的共价键比最近的B键强B原子(B1和B4)。

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