High-pressure polymorphic transformation of rutile to alpha-PbO2-type TiO2 at {011}(R) twin boundaries
文献类型：期刊论文
| 作者 | Meng, D. W.3,4; Wu, X. L.1,2,4; Sun, F.3; Huang, L. W.3; Liu, F.5; Han, Y. J.2; Zheng, J. P.1,2; Meng, X.6; Mason, R.1,2 |
| 刊名 | MICRON
 |
| 出版日期 | 2008 |
| 卷号 | 39期号:3页码:280-286 |
| 关键词 | rutile twin alpha-PbO2-type TiO2 phase transformation image simulation |
| ISSN号 | 0968-4328 |
| DOI | 10.1016/j.micron.2007.07.001 |
| 文献子类 | Review |
| 英文摘要 | The presence of nano-scale lamellae of the alpha-PbO2-type polymorph of TiO2 sandwiched between twinned rutile inclusions in jadeite has been confirmed by electron diffraction and high-resolution transmission electron microscopy, backed up by image simulation techniques, from ultrahigh-pressure jadeite quartzite at Shuanghe in the Dabie Mountains, China. The crystal structure is orthorhombic with lattice parameters a = 4.58 angstrom, b = 5.42 angstrom, c = 5.02 angstrom and space group Pbcn. A three-dimensional structural model has been constructed for the rutile to alpha-PbO2-type TiO2 phase transformation based on high-resolution electron microscopic images. Computer image simulation and structural model analysis reveal that rutile {0 1 1}(R) twin interface is a basic structural unit of alpha-PbO2-type TiO2. Nucleation of alpha-PbO2-type TiO2 lamellae 1-2 nm thick is caused by the displacement of one half of the titanium cations within the {011}(R) twin slab. This displacement reduces the Ti-O-Ti distance and is favored by high pressure. (C) 2007 Elsevier Ltd. All rights reserved. |
| WOS关键词 | COESITE-BEARING ECLOGITE ; DABIE MOUNTAINS ; CHINA ; NANOPHASE ; PHASE |
| WOS研究方向 | Microscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000254601500007 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70140]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Wu, X. L. |
| 作者单位 | 1.China Univ Geosci, Testing Ctr, Wuhan 430074, Peoples R China 2.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China 3.China Univ Geosci, Fac Mat Sci & Chem Engn, Wuhan 430074, Peoples R China 4.Wuhan Univ, Electron Microscope Ctr, Wuhan 430070, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Chinese State Key Lab Lithosphere Evolut, Beijing 100029, Peoples R China 6.Univ London Imperial Coll Sci Technol & Med, Humanities Programme, London SW7 2AZ, England |
| 推荐引用方式 GB/T 7714 | Meng, D. W.,Wu, X. L.,Sun, F.,et al. High-pressure polymorphic transformation of rutile to alpha-PbO2-type TiO2 at {011}(R) twin boundaries[J]. MICRON,2008,39(3):280-286. |
| APA | Meng, D. W..,Wu, X. L..,Sun, F..,Huang, L. W..,Liu, F..,...&Mason, R..(2008).High-pressure polymorphic transformation of rutile to alpha-PbO2-type TiO2 at {011}(R) twin boundaries.MICRON,39(3),280-286. |
| MLA | Meng, D. W.,et al."High-pressure polymorphic transformation of rutile to alpha-PbO2-type TiO2 at {011}(R) twin boundaries".MICRON 39.3(2008):280-286. |
入库方式： OAI收割
来源：地质与地球物理研究所
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