Diffusion of O-18 in Fe3O4: An experimental approach to study the behavior of minority defects in oxides
文献类型：期刊论文
| 作者 | F. Millot ; Y. Niu |
| 刊名 | Journal of Physics and Chemistry of Solids
 |
| 出版日期 | 1997 |
| 卷号 | 58期号:1页码:63-72 |
| 关键词 | oxygen self-diffusion cation diffusion high-temperature single-crystals vacancy pairs magnetite nonstoichiometry motion rutile |
| ISSN号 | 0022-3697 |
| 中文摘要 | The self diffusion of oxygen in Fe3O4 has been studied at 1150 degrees C by means of an oxygen isotopic exchange method. T The experimental value of the oxygen diffusion coefficient D-0* decreases with the oxygen partial pressure in a lower range up to about 10(-7) atm with a slope equal to 1/2, while at higher P-O2 it increases with a slope of about 1/6. These results are attributed to a change in the nature of the defects in the oxygen sublattice. At low P-O2, where the majority defects are iron interstitials, the prevailing oxygen defects are free oxygen vacancies. At high P-O2, where the majority defects are cation vacancies, the observed slope supports the presence of clusters of metal vacancies with oxygen vacancies formed as a result of the Coulombic attractions. A general discussion of the properties of minority defects in oxides is also presented. (C) 1996 Elsevier Science Ltd. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/38053]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | F. Millot,Y. Niu. Diffusion of O-18 in Fe3O4: An experimental approach to study the behavior of minority defects in oxides[J]. Journal of Physics and Chemistry of Solids,1997,58(1):63-72. |
| APA | F. Millot,&Y. Niu.(1997).Diffusion of O-18 in Fe3O4: An experimental approach to study the behavior of minority defects in oxides.Journal of Physics and Chemistry of Solids,58(1),63-72. |
| MLA | F. Millot,et al."Diffusion of O-18 in Fe3O4: An experimental approach to study the behavior of minority defects in oxides".Journal of Physics and Chemistry of Solids 58.1(1997):63-72. |
入库方式： OAI收割
来源：金属研究所
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