在Mn-Doped ZnO纳米颗粒中使用室温铁磁,由Sol-Gel方法合成
Sidra Kanwal1, Muhammad Tahir Khan1, Vineet Tirth2,3
1Department of Physics, Riphah International University, Islamabad 44000, Pakistan.
ACS omega
|August 14, 2023
概括
合成了纯氧化 (ZnO) 和添加剂的 ZnO 纳米粒子. 在ZnO纳米颗粒中使用诱导室温铁磁性,使它们适合未来的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 固态物理 固态物理
背景情况:
- 氧化 (ZnO) 是一种半导体,具有多种应用.
- 用过渡金属合ZnO可以改变其磁性和光学性质.
- 对于探索新的磁性功能来说,研究胺的ZnO至关重要.
研究的目的:
- 通过sol-gel自燃方法合成纯和Mn-doped ZnO纳米颗粒.
- 描述合成纳米粒子的结构,光学和磁性特性.
- 为了探索Mn-doped ZnO在室温铁磁力学中的潜力.
主要方法:
- 索尔凝自燃合成的合成方法
- 用于结构分析的X射线衍射 (XRD).
- 场发射扫描电子显微镜 (FESEM) 用于微观结构.
- 里埃变换红外光谱法 (FTIR) 光谱法
- 紫外线可见吸收光谱用于频段间隙测定.
- 测量磁性属性测量 磁性属性测量
主要成果:
- 对所有样本的六角石结构得到证实.
- 2+离子的成功结合,由格子参数的变化证明.
- 结晶体大小随着胺兴奋剂度的增加而减少.
- 观察到吸收波段的红移和能量波段间隙的减少.
- 在Mn-doped ZnO中,从二磁性转变为室温铁磁性行为.
结论:
- 胺的 ZnO 纳米粒子表现出室温铁磁性.
- 观察到的特性归因于sp-d交换相互作用.
- 这些发现表明Mn-doped ZnO纳米粒子是未来技术应用的有希望的候选者.
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