陶的结构,形态,介电,电和磁性,用于多功能应用的陶
S A Mamun1,2, Mithun Kumar Das1, K S Uddin1
1Department of Physics, Comilla University, Cumilla, 3506, Bangladesh.
Heliyon
|August 26, 2024
概括
这项研究合成了Dy和Mn合的BaTiO3陶,揭示了潜在的无多铁应用的优化性能. 这些材料具有增强的电介质,磁性和电特性,使它们成为以为基础的物质的有希望的替代品.
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
背景情况:
- 乙酸 (BaTiO3) 是一种众所周知的铁电材料,但人们正在寻找具有增强多铁性质的无替代品.
- 将BaTiO3与稀土元素如 (Dy) 和过渡金属如 (Mn) 进行合,可以改变其结构,电和磁特性.
- 研究低度Dy和Mn兴奋剂的同时作用对于开发先进的功能陶至关重要.
研究的目的:
- 使用标准固态反应方法合成和描述多晶Ba1-xDy2x/3Ti0.98Mn0.02O3陶.
- 为了研究同时Dy和Mn兴奋剂对BaTiO3.3的结构,形态,电和磁性特性的影响.
- 评估这些合陶作为环境可接受的无多铁材料的潜力.
主要方法:
- 固态反应合成,然后在1200°C进行烧结.
- 用X射线衍射 (XRD) 进行结构分析,用场发射扫描电子显微镜 (FESEM) 进行形态分析,用电性能分析阻抗分析仪,用振动样品磁力计 (VSM) 进行磁性分析.
- 对孔隙度,粒度大小,特定表面积 (BET),介电常数,介电损耗和相对质量因子 (RQF) 的分析.
主要成果:
- 佩洛夫斯基特结构的形成与四角形对称性通过XRD证实.
- 随着Dy含量增加,孔隙性减少,在x = 0.0080.0时观察到的孔隙性最低.
- 优化过电常数 (6 × 10^3 在 10^3 Hz) 和低过电损失 (<5%) 对于 x = 0.0070.
- 显著的磁性特性,在x = 0.0080时具有最佳和磁化 (0.371emu/g),在x = 0.008时具有增强的相对质量因子 (>100),在x = 0.0075.5时具有10^8Hz时具有相对质量因子 (>100).
- 发现颗粒边界效应对导电过程具有重要意义.
结论:
- 在BaTiO3中同时使用Dy和Mn的兴奋剂有效地改变了其结构,电和磁性特性.
- 合成的陶表现出有希望的多铁特性,包括高介电常数,低介电损失和显著的磁响应.
- 这些Dy和Mn合的BaTiO3陶为多铁应用提供了可行的无替代品.
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