Gd对BaTiO3的结构,形态和介电行为的影响
Ahmed I Ali1, S Abu Alrub2, R K Hussein2
1Basic Science Department, Faculty of Technology and Education, Helwan University, Saraya El Koba, El Sawah Street, Cairo, 11281, Egypt.
Scientific reports
|September 30, 2025
概括
在泰坦酸 (BaTiO3) 中的加多 (Gd) 替代产生空缺,改变结构和介电性质. 这项研究为开发先进的功能材料提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 纳米技术纳米技术
背景情况:
- 酸泰坦酸 (BaTiO3) 是一种众所周知的铁电陶,具有多种应用.
- 用稀土元素修改BaTiO3可以调整其特性以适应特定用途.
- 加多 (Gd) 的结合为设计 BaTiO3 的电子和介电行为提供了一条途径.
研究的目的:
- 为了合成和描述加多修饰的酸泰坦酸 (GdxBa1−xTiO3).
- 研究 Ba2+ 位点中的 Gd3+ 离子的替代机制以及由此产生的空缺.
- 分析Gd含量对结构,光学和介电性质的影响.
主要方法:
- 通过修改的固态反应方法进行合成.
- 使用X射线衍射 (XRD),FT-IR光谱,FE-SEM和拉曼光谱进行结构分析.
- 评估光发光 (PL) 和介电性质在各种频率和温度.
主要成果:
- 证实了Gd3+替换到Ba2+位点,为电荷中立性创造了Ba和氧气空缺.
- 观察到结构阶段从四角形到正角形的过渡,Gd含量增加.
- 减少颗粒大小和改变形态被发现与更高的Gd度.
- 介电常数随着Gd含量和频率的增加而下降,表明属性调制.
结论:
- 通过对Gd的控制,有效调节BaTiO3.3的电子和介电性质.
- 这项研究为设计先进的功能性材料提供了宝贵的见解.
- 经Gd修改的BaTiO3显示出针对性技术应用的潜力.
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