| Ba_(1-x)Ca_xZr_yTi_(1-y)O_3纳米材料的合成、结构与性能 |
| |
| 引用本文： | 丁士文,翟永青,王静,李希茂,秦江雷.Ba_(1-x)Ca_xZr_yTi_(1-y)O_3纳米材料的合成、结构与性能[J].河北大学学报(自然科学版),2000,20(3):256-258. |
| |
| 作者姓名： | 丁士文 翟永青 王静 李希茂 秦江雷 |
| |
| 作者单位： | 河北大学,化学系,河北,保定,071002 |
| |
| 基金项目： | 河北省自然科学基金，299078， |
| |
| 摘 要： | 采用常压水相法 ,在100℃以下制备了一系列Ba1 -xCaxZryTi1 -yO3 固溶体纳米粉末(0≤x≤0.5,采用常压水相法 ,在100℃以下制备了一系列Ba1 -xCaxZryTi1 -yO3 固溶体纳米粉末(0≤x≤0.5,0≤y≤3),经XRD物相分析和d -间距 -组成图证明 ,产品为立方晶系的完全互溶取代固溶体 ,结果符合Vegard定律.TEM形貌观察 ,粒子为均匀球形 ,平均粒径70nm.通过制陶实验 ,分别测定了该系列固溶体的室温介电常数以及介电常数随温度的变化 ,结果发现 ,用软化学方法在BaTiO3 中掺入适量钙和锆 ,由于掺杂离子均匀进入母体晶格 ,引起tc 降低 ,室温介电常数达9200 ,比BaTiO3 纯相提高6倍.
|
| 关 键 词： | BaTiO_3基固溶体 化学掺杂 介电特性 |
| 文章编号： | 1000-1565(2000)03-0256-03 |
| 修稿时间： | 2000-01-10 |
Synthesis, Structure and Property of Ba1-xCaxZryTi1-yO3 |
| |
| DING Shi-wen,ZHAI Yong-qing,WANG Jing,LI Xi-mao,QIN Jiang-lei.Synthesis, Structure and Property of Ba1-xCaxZryTi1-yO3[J].Journal of Hebei University (Natural Science Edition),2000,20(3):256-258. |
| |
| Authors: | DING Shi-wen ZHAI Yong-qing WANG Jing LI Xi-mao QIN Jiang-lei |
| |
| Institution: | DING Shi-wen ,ZHAI Yong-qing ,WANG
Jing ,LI Xi-mao ,QIN Jiang-lei
(Department of Chemistry, Hebei University, Baoding 071002, China) |
| |
| Abstract: | A series of Ba 1-xCaxZryTi1-yO3 (0≤x≤0.5,0≤y≤0.3) solid solutions were synthesized by soft chemical method below 100 ℃.XRD and cell parameters-component figures of the series of the solid solutions powder demonstrated that the compounds are mutually miscible in the solid solutions. Furthermore, an observation through a TEM was conducted, and the product was found to have a shape of uniform, substantially spherical particles with an average particle size of 70 nm in diameter. The result of preparing ceramics showed that after adulterating with Ca 2+ and Zr 4+ in pure BaTiO 3 phase, the dielectric constant increased six times at room temperature. |
| |
| Keywords: | BaTiO 3 solid solutions chemical adulteration dielectric property |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
