Formation energies of antisite defects in Y3Al5O12: A first-principles study

Formation energies of antisite defects in Y3Al5O12: A first-principles study
复制标题

Y3Al5O12 中反位缺陷的形成能:第一性原理研究

DOI:
10.1063/1.3109799
复制
发表时间:
2009-03
影响因子:
4
通讯作者:
Ni, Chen
Ni, Chen
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Gu, Mu;Liu, Bo;Liu, Xiaolin;Huang, Shiming;Ni, Chen

文献摘要

参考文献

被引文献

相似文献

本文用第一性原理计算了Y3Al5O12中阳离子反位缺陷的形成能。该方法提供了形成能的精确值,从而使我们能够估计缺陷浓度。计算结果表明,YAl_(16)a在高温下是单晶生长中最主要的反位缺陷,而在低温下其浓度显著降低。计算的缺陷浓度与实验估计值定量雅阁。AlY具有高的形成能,即使与过量的Al2O3,这表明AlY是能量上不利的和缺陷过程不是本征的,但非化学计量。
We perform the first-principles calculations for the formation energies of cation antisite defects in Y3Al5O12. This method provides precise values of formation energy and thus allows us to estimate the defect concentration. The calculations show that YAl,16a is the most predominant antisite defects at high temperature for the single crystal growth and its concentration significantly decreases at low temperature for the single-crystalline film preparation. The calculated defect concentrations are quantitatively accord with the experimental estimation. AlY has high formation energy even with excess Al2O3, which indicates AlY is energetically unfavorable and the defect process is not intrinsic but nonstoichiometry.
影响因子: 1.4
作者:
MOSZYNSKI, M;LUDZIEJEWSKI, T;NORLIN, LO
通讯作者: NORLIN, LO
DOI: 10.1063/1.2785131
发表时间: 2007-09-10
影响因子: 4
作者:
Kasuya, R.;Kawano, A.;Isobe, T.
通讯作者: Isobe, T.
DOI: 10.1016/s0927-0256(02)00325-7
发表时间: 2002-11-01
影响因子: 3.3
作者:
Gonze, X;Beuken, JM;Allan, DC
通讯作者: Allan, DC
DOI: 10.1016/j.jlumin.2004.12.002
发表时间: 2005-08
影响因子: 3.6
作者:
Y. Zorenko;V. Gorbenko;I. Konstankevych;A. Voloshinovskii;G. Stryganyuk;V. Mikhailin;V. Kolobanov
通讯作者: Y. Zorenko;V. Gorbenko;I. Konstankevych;A. Voloshinovskii;G. Stryganyuk;V. Mikhailin;V. Kolobanov
DOI: 10.1063/1.2981086
发表时间: 2008-09
影响因子: 4
作者:
D. Solodovnikov;M. Weber;K. Lynn
通讯作者: D. Solodovnikov;M. Weber;K. Lynn