First-principles molecular dynamics study for average structure and oxygen diffusivity at high temperature in cubic Bi2O3

First-principles molecular dynamics study for average structure and oxygen diffusivity at high temperature in cubic Bi2O3
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立方Bi2O3平均结构和高温氧扩散率的第一性原理分子动力学研究

DOI:
10.1088/0953-8984/24/47/475402
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发表时间:
2012
期刊:
J. Phys.: Condens. Matter
影响因子:
--
通讯作者:
A. Matsumoto and I. Tanaka
A. Matsumoto and I. Tanaka
中科院分区:
--
文献类型:
--
作者:
A. Seko;Y. Koyama;A. Matsumoto and I. Tanaka

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铋氧化物Bi 2 O3在高温下具有立方结构(δ相).δ-Bi 2 O3的高氧电导率与氧亚晶格的无序化密切相关.为了使用第一性原理分子动力学(FPMD)重建晶体中的无序结构,基本上需要足够长的模拟时间。在这项研究中,FPMD模拟高达1纳秒进行特别关注的平均结构和氧扩散率的收敛相对于模拟时间。得到的平均结构和氧扩散系数与实验分析结果吻合得很好。
Bismuth oxide, Bi 2 O 3, has a cubic structure (δ-phase) at high temperature. High oxygen conductivity of δ-Bi 2 O 3 should be closely related to disordering of the oxygen sublattice. In order to reconstruct the disordered structure in the crystal using first-principles molecular dynamics (FPMD), a sufficiently long simulation time is essentially required. In this study, the FPMD simulation up to 1 ns is performed with special interest given to the convergence of the average structure and the oxygen diffusivity with respect to the simulation time. The obtained average structure and the oxygen diffusivity are in good agreement with those obtained by experimental analysis.
DOI: --
发表时间: 1987
期刊:
影响因子: --
作者:
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通讯作者: D. M. Dónaill
DOI: 10.1016/j.cplett.2003.07.014
发表时间: 2003-09
影响因子: 2.8
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DOI: 10.1063/1.447334
发表时间: 1984-01-01
影响因子: 4.4
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