| 二氧化锡纳米粉掺杂及其显微结构 |
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| 引用本文： | 王元生,杨裕民,黄兆新.二氧化锡纳米粉掺杂及其显微结构[J].材料研究学报,1998,12(5):531-534. |
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| 作者姓名： | 王元生 杨裕民 黄兆新 |
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| 作者单位： | 福州大学中心实验室!福州市，350002(王元生)，福州大学!福州市，350002(杨裕民，黄兆新) |
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| 基金项目： | 福建省自然科学基金!E96005 |
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| 摘 要： | 以无机盐水前驱物，用溶胶－凝胶法制备了掺Ｆｅ的ＳｎＯ２纳米粉体，用Ｘ射线衍射，透射电镜，差热分析和Ｍｏｅｓｓｂａｕｅｒ谱学研究了它的物相，晶粒度及变化过程，结果表明，Ｆｅ与Ｓｎ原子比为０／１００～３８．５／１００的几种粉体，都属于四方晶系，Ｆｅ原子固溶于晶格中，粉体的晶料度最小可达～２ｎｍ掺杂Ｆｅ可以减小ＳｎＯ２的晶粒度，在热处理时阻碍ＳｎＯ２晶粒长大，有利于烧结后仍保持纳米晶结构，Ｆｅ与Ｓｎ比为
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| 关 键 词： | 纳米材料 掺杂 晶粒度 二氧化锡 显微结构 |
| 收稿时间： | 1998-10-25 |
| 修稿时间： | 1998-10-25 |
DOPING AND MICROSTRUCTURE OF NANOCRYSTALLINE SnO_2 |
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| WANG YuanSheng,YANG Yumin,HUANG Zhaoxin.DOPING AND MICROSTRUCTURE OF NANOCRYSTALLINE SnO_2[J].Chinese Journal of Materials Research,1998,12(5):531-534. |
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| Authors: | WANG YuanSheng YANG Yumin HUANG Zhaoxin |
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| Affiliation: | WANG YuanSheng,YANG Yumin,HUANG Zhaoxin(Centre Lab. Fuzhou University,Fuzhou ) |
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| Abstract: | SnO2 nanocrystalline powder doped with variable ratios of Fe have been preparedty sol-gel method. The phase and grain-size, and their evolution of the powder have been studied by XRD, TEM, DTA and Mossbauer spectrometer. For the pewder with Fe/Sn atomic ratios range from 14.3/100 to 38-5/100, they are all SnO2 phases with Fe atoms as the solute in the lattice. Thegrain-size reaches about 2nm. Fe doping takes the role of reducing SnO2 grain-size, and restrain the grain growth during heat treatment, and thus favorable to keep the nanostructure of the material whenthe powder be sintered to form the gas-sensitive elements. |
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| Keywords: | nanocrystalline doping grain-size |
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