基于氧化铁和氧化的两,三,四组件磁性多层洋纳米粒子
German Salazar-Alvarez1, Hans Lidbaum, Alberto López-Ortega
1Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden. german@mmk.su.se
Journal of the American Chemical Society
|October 7, 2011
概括
研究人员通过将氧化沉积在氧化铁种子上,创造了具有多层的新型磁纳米粒子. 这些复杂的异构结构允许研究磁交换合.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 磁性多层纳米粒子作为研究磁交换合的模型系统.
- 不同结构的纳米粒子根据它们的分层组成提供可调节的磁性.
研究的目的:
- 为了合成具有控制的多元组件层的异构结构磁性纳米粒子.
- 通过受控的氧化和被动化来探索不同磁层的形成.
主要方法:
- 铁氧化物纳米粒子种子的合成.
- 氧化物层的沉积.
- 控制氧化层的被动化和氧化.
- 由此产生的异构结构的磁性表征.
主要成果:
- 成功合成了具有两个,三个或四个不同的磁层的纳米粒子.
- 证明了对层层形成的控制,包括FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOFe,FeOOFe,FeOOOFe,FeO3OO
- 通过表征证实了多个磁层的存在和独特性质.
结论:
- 控制合成允许创建复杂的磁性异构结构.
- 这些纳米粒子对于磁交换合的基础研究是有价值的.
- 可调节的多层磁纳米粒子可以通过精确控制沉积和被动化过程来制造.
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