Gd兴奋剂对SrFeO3矿纳米材料结构和磁性特征的影响
T Sindhu1, A T Ravichandran1, A Robert Xavier2
1PG and Research Department of Physics, National College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli 620 001, Tamil Nadu, India.
Journal of physics. Condensed matter : an Institute of Physics journal
|September 16, 2024
概括
合成了加多配合的铁氧化 (SrFeO3) 纳米粒子. 较高的Gd兴奋剂增强了磁性特性,表明了潜在的自旋电子设备应用.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 纳米技术 纳米技术
背景情况:
- 铁氧化 (SrFeO3) 是电子应用的一个有前途的材料.
- 兴奋剂可以用来调整SrFeO3.3的磁性和电子性质.
- 加多 (Gd) 兴奋剂正在探索增强SrFeO3的特性.
研究的目的:
- 为了合成Gd合的SrFeO3纳米粒子.
- 为了研究这些杂纳米粒子的结构,形态和磁性特性.
- 为了评估它们对自旋电子应用的潜力.
主要方法:
- 解决方案燃烧合成用于纳米粒子制造.
- 粉末X射线衍射 (XRD) 用于相位分析.
- 场发射扫描电子显微镜 (FESEM) 和高分辨率传输电子显微镜 (HRTEM) 用于形态学.
- 能量分散式X射线光谱 (EDS) 用于元素组成.
- 对氧化状态的X射线光电子光谱 (XPS).
- SQUID磁力测量用于磁性表征.
主要成果:
- 成功合成了Gd化SrFeO3纳米粒子.成功合成了Gd化SrFeO3纳米粒子.
- XRD证实了所需晶体相的形成.
- FESEM和HRTEM揭示了有序的,聚合的纳米粒子形态.
- EDS证实了元素的存在,而XPS表明了混合的Fe氧化状态 (Fe3+和Fe4+).
- 所有样本都表现出铁磁性行为,磁矩随着Gd兴奋剂度的增加而增加.
- 更高的Gd兴奋剂导致增强的磁矩和减少的强制性.
结论:
- Gd剂有效地改变了SrFeO3纳米颗粒的结构和磁性特性.
- 增强的磁性特性使得这些材料对自旋电子应用非常有前途.
- 对优化兴奋剂水平和设备集成的进一步研究是有必要的.
更多相关视频
06:49Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates
Published on: April 12, 2019
7.6K
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
1.9K
相关概念视频
03:02Colors and Magnetism
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
01:31Ferromagnetism
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...