Should muffin tin radius vary in different structures of a material?: A case study

Should muffin tin radius vary in different structures of a material?: A case study
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松饼罐半径是否应随材料结构的不同而变化?:案例研究

DOI:
10.1063/1.4872865
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发表时间:
2014
期刊:
--
影响因子:
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通讯作者:
U. P. Verma
U. P. Verma
中科院分区:
--
文献类型:
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作者:
V. Nayak;S. Banger;U. P. Verma

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基于密度泛函理论和广义梯度近似(GGA)的量子力学计算研究了YbN的结构性质。其在NaCl (B1)结构和CsCl (B2)结构中的预测晶格参数分别为4.7810A和2.868a。在晶格参数的确定中,组成原子的松饼锡半径(RMT)起着重要的作用。在这两种结构中,Yb和N的松饼半径分别收敛于2.3和1.4 a.u.。
Quantum mechanical calculations based on density functional theory and a generalized gradient approximation (GGA) have been used to study the structural properties of YbN. Its predicted unit cell lattice parameter in NaCl (B1) structure is 4.7810A and in CsCl (B2) structure it is 2.8685A. In the determination of lattice parameter the muffin tin radius (RMT) of constituent atoms play important role. In both the structures the muffin tin radius for Yb and N converges to 2.3 and 1.4 a.u., respectively.