新型磁性纳米复合材料的特征基于萨马正极酸盐
Kh Roumaih1, Sh I Hussein2, S A Gad3
1Reactor Physics Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt. khroumaih@yahoo.com.
Scientific reports
|January 19, 2026
概括
多铁复合材料 (MF/SmF) 被合成和表征,揭示了纳米尺寸和可调节的带隙能量. 证实了Sm和MF之间的交换合相互作用,影响磁性.
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:
- 多铁性材料同时表现出磁性和铁电性顺序.
- 稀土正铁体 (SmFeO3) 是多铁应用的有希望的候选物.
- 了解不同阶段之间的相互作用对于设计先进材料至关重要.
研究的目的:
- 合成和表征多铁复合材料 (MF/SmF).
- 研究SmFeO3对各种金属酸盐 (MF) 的相位组成,微观结构和性质的影响.
- 探索这些纳米复合材料的交换合相互作用和磁性特性.
主要方法:
- 索尔-凝合成方法.
- 射线衍射 (XRD),HR-TEM,FE-SEM,FT-IR,EDXA用于结构和组成分析.
- 紫外线吸收光谱,EPR光谱和VSM用于光学和磁性属性评估.
主要成果:
- 纯二相 (正合体+立方体) 多铁复合材料成功合成了纳米尺寸 (17-92 nm) 的多铁复合材料.
- SmFeO3的添加影响了金属铁的相组成,微观结构和结晶性.
- 观察到可调节的带隙能量 (例如,CoFe2O4/SmFeO3的1.18 eV,NiFe2O4/SmFeO3的1.8 eV).
- 证实了Sm和MF之间的交换合相互作用,影响磁性参数.
结论:
- 在合成MF/SmF多铁纳米复合材料时,sol-gel方法是有效的.
- 在定制复合材料的结构,光学和磁性特性方面,SmFeO3发挥着重要作用.
- 这些发现表明,在先进的磁性和光学设备中存在潜在的应用.
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