Measurement of Defect-Mediated Oxygen Self-Diffusion in Metal Oxides
Measurement of Defect-Mediated Oxygen Self-Diffusion in Metal Oxides
复制标题
金属氧化物中缺陷介导的氧自扩散的测量
DOI:
10.1149/2.011202jss
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发表时间:
2012
影响因子:
2.2
通讯作者:
E. Seebauer
中科院分区:
文献类型:
--
作者:
Prashun Gorai;A. Hollister;E. Seebauer
Solid-state diffusion of native defects in some metal oxides takes place via highly mobile intermediate species that periodically exchange with lattice atoms. A mathematical model has been formulated to determine the key diffusion parameters from mesoscopic gas-solid diffusion measurements in the short-time limit. The model provides a straightforward analytical means to utilize standard isotope gas-solid exchange experiments to obtain parameters connected to diffusion length and net rate of defect formation at the surface. Application of the method to experimental data for oxygen self-diffusion in titanium dioxide suggests that under conditions where gas-solid exchange takes place through an especially clean surface, a fast-moving species mediates oxygen self-diffusion.
影响因子:
3.7
作者:
Erhart, P;Albe, K
通讯作者:
Albe, K