Direct retrieval of crystal and surface structures using high energy electrons
文献类型：期刊论文
| 作者 | Peng, LM |
| 刊名 | MICRON
 |
| 出版日期 | 1997 |
| 卷号 | 28期号:2页码:159 |
| 关键词 | NONCENTROSYMMETRIC CRYSTALS DIFFRACTION SCATTERING CRYSTALLOGRAPHY REFINEMENT APPROXIMATION PARAMETERS INVERSION PATTERNS MATRIX |
| ISSN号 | 0968-4328 |
| 通讯作者 | Peng, LM: CHINESE ACAD SCI,BEIJING LAB ELECTRON MICROSCOPY,POB 2724,BEIJING 100080,PEOPLES R CHINA. |
| 中文摘要 | A direct scheme has been developed for crystal and surface structure determination. This scheme is based on a partition of the crystal potential V(r) into a known part V-0(r) and a perturbation delta V(r), i.e. V(r) = V-0(r)+delta V(r). The full dynamical electron diffraction theory is used for treating the dynamical electron diffraction by V-0(r) and perturbation theory is used for dealing with the residual scattering by delta V(r). It is shown that this partition is applicable for a wide range of situations of practical importance, including scattering by the re-distributed valence electrons and by a reconstructed surface layer. In some favourable cases, when the crystal thickness is not exceedingly large and atomic displacements from the known structure giving rise to V-0(r) are small(as in the case of structure refinement), crystal structure factors and crystal and surface structure can be directly inverted from dynamical diffraction data. Both the perturbation method and the direct scheme have been extensively tested, and in particular the direct scheme has been used successfully to invert crystal structure factors directly from experimental CBED data obtained from a single crystal of MgO. (C) 1997 Elsevier Science Ltd. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36074]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Peng, LM. Direct retrieval of crystal and surface structures using high energy electrons[J]. MICRON,1997,28(2):159. |
| APA | Peng, LM.(1997).Direct retrieval of crystal and surface structures using high energy electrons.MICRON,28(2),159. |
| MLA | Peng, LM."Direct retrieval of crystal and surface structures using high energy electrons".MICRON 28.2(1997):159. |
入库方式： OAI收割
来源：物理研究所
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