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| 纳米板钛矿基TiO2的晶粒尺寸效应 | |
| 引用本文： | 刘向东,焦正宽,叶锡生,彭子飞,张立德.纳米板钛矿基TiO2的晶粒尺寸效应[J].浙江大学学报(理学版),2001,28(6). |
| 作者姓名： | 刘向东 焦正宽 叶锡生 彭子飞 张立德 |
| 作者单位： | 1. 浙江大学物理系, 2. 西北核技术研究所, 3. 中国科学院固体物理研究所, |
| 摘 要： | 借助精确的X射线衍射测量,结合独立衍射峰对不同晶粒度纳米板钛矿基TiO-2样品中板钛矿和金红石相的微结构参量进行了较细致的研究,给出了标征物相、晶面指数(hk1)和晶面间距d-{hkl}值,详细分析结果的系列XRD谱,并得到晶面间距、晶格常数、轴比、晶胞体积等参数数值及其相对常规粗晶的变化情况,从而初步揭示出其晶粒微结构的尺寸效应.作者首次发现,纳米板钛矿基TiO-2样品中板钛矿和金红石相晶粒均存在着非单调的各向异性晶格畸变. |
| 关 键 词： | 纳米板钛矿基TiO-2 微结构 尺寸效应 |
Size effect on crystallite microstructure in nanocrystalline brookite-based TiO_2. |
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| LIU Xiang-dong,JIAO Zheng-kuan,YE Xi-sheng,PENG Zi-fei,ZHANG Li-de.Size effect on crystallite microstructure in nanocrystalline brookite-based TiO_2.[J].Journal of Zhejiang University(Sciences Edition),2001,28(6). | |
| Authors: | LIU Xiang-dong JIAO Zheng-kuan YE Xi-sheng PENG Zi-fei ZHANG Li-de |
| Institution: | LIU Xiang-dong+1,JIAO Zheng-kuan+1,YE Xi-sheng+2,PENG Zi-fei+3,ZHANG Li-de+3 |
| Abstract: | By using XRD (X-ray diffraction) technique, the microstructure parameters of nanocrystalline brookite-based TiO-2 specimens of various grain sizes are investigated. From the obtained experimental results of the size effect on microstructure, it has been found that there exists a nonmonotonous and anisotropic lattice distortion in the brookite-phase and anatase-phase of these novel nanomaterial TiO-2 crystallites. |
| Keywords: | nanocrystalline brookite-based TiO-2 microstructure size effect |
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