对加的PbTiO3粉末进行详细的结构分析
1Department of Chemical Engineering, Çukurova University, Adana, Turkey.
Turkish journal of chemistry
|August 4, 2023
概括
在酸 (PbTiO3) 陶中化形成了二次 Co3O4 阶段,意外地阻碍了铁电特性. 本研究详细介绍了化和未化PbTiO3粉末的结构和相位分析.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 陶工程 陶工程 陶工程
背景情况:
- 了解缺陷和次要阶段对于定制材料特性至关重要.
- 酸 (PbTiO3) 是一个具有重要的铁电应用的关键矿材料.
- 科巴尔特兴奋剂正在探索如何修改PbTiO3.3的特性.
研究的目的:
- 系统地检查无兴奋剂和兴奋剂PbTiO3粉末陶的结构.
- 调查兴奋剂对PbTiO3.3相形成和结构性质的影响.
- 为了将结构发现与铁电行为相关联.
主要方法:
- 在50°C时通过sol-gel路径合成PbTiO3和化PbTiO3.
- 使用X射线衍射 (XRD),FT-IR,拉曼和EPR光谱学进行结构性表征.
- 使用热重力测量分析 (TGA) 和差分扫描热量计 (DSC) 的热分析.
主要成果:
- 佩洛夫斯基特的形成证实了化和未化PbTiO3.
- 与未使用物质 (0.00239 nm-2) 相比,用物质合的PbTiO3表现出更高的脱位密度 (0.0121 nm-2) 和应变效应.
- 通过EPR和FT-IR检测到的Co3O4二级阶段,与应变和非改善的铁电行为有关. 介电常数:1066 ,介电损耗 (tan δ):0.8370. 介电损耗 (tan δ):0.8370. 介电常数:1066 ,介电损失 (tan δ):0.8370. 介电损失 (tan δ):0.8370.
结论:
- 在PbTiO3中化会导致Co3O4二级阶段的形成.
- 3O4的存在会对PbTiO3.4的铁电特性产生负面影响.
- 在50°C的sol-gel合成对于产生矿PbTiO3是有效的,但注需要仔细考虑二级阶段的形成.
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