遇见数据集

BA10-18

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DataCite Commons2024-03-28 更新2024-07-13 收录
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Dataset (DFT-10B) contains structures of the 10 binary alloys AgCu, AlFe, AlMg, AlNi, AlTi, CoNi, CuFe, CuNi, FeV, and NbNi. Each alloy system includes all possible unit cells with 1-8 atoms for face-centered cubic (fcc) and body-centered cubic (bcc) crystal types, and all possible unit cells with 2-8 atoms for the hexagonal close-packed (hcp) crystal type. This results in 631 fcc, 631 bcc, and 333 hcp structures, yielding 1595 x 10 = 15,950 unrelaxed structures in total. Lattice parameters for each crystal structure were set according to Vegard's law. Total energies were computed using DFT with projector-augmented wave (PAW) potentials within the generalized gradient approximation (GGA) of Perdew, Burke, and Ernzerhof (PBE) as implemented in the Vienna Ab Initio Simulation Package (VASP). The k-point meshes for sampling the Brillouin zone were constructed using generalized regular grids.

数据集(DFT-10B)包含10种二元合金的结构,分别为AgCu、AlFe、AlMg、AlNi、AlTi、CoNi、CuFe、CuNi、FeV及NbNi。针对每种合金体系,涵盖了面心立方(face-centered cubic, fcc)与体心立方(body-centered cubic, bcc)晶体结构下所有含1~8个原子的可能晶胞,以及密排六方(hexagonal close-packed, hcp)晶体结构下所有含2~8个原子的可能晶胞。最终得到631个fcc结构、631个bcc结构与333个hcp结构,总计1595×10=15950个未弛豫结构。各晶体结构的晶格参数均依据维加德定律(Vegard's law)设定。总能量通过密度泛函理论(DFT)计算,计算采用维也纳从头算模拟包(Vienna Ab Initio Simulation Package, VASP)中实现的佩尔dew-伯克-恩泽霍夫(Perdew, Burke, Ernzerhof, PBE)广义梯度近似(GGA)框架,并结合投影缀加波(projector-augmented wave, PAW)势。用于布里渊区采样的k点网格采用广义正则网格构建。

提供机构:
ColabFit
创建时间:
2024-03-28
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