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聚合物介导磁纳米粒子的自组装
Shouheng Sun1, Simone Anders, Hendrik F Hamann
1IBM T. J. Watson Research Center, Yorktown Heights, NY 10598, USA. ssun@us.ibm.com
Journal of the American Chemical Society
|March 21, 2002
概括
我们开发了一种简单的聚合物辅助方法,以组装磁铁- (FePt) 纳米粒子. 这种技术允许控制的薄膜形成,使未来磁纳米设备的激光控制磁化成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 磁力学 磁力学 是一种
背景情况:
- 制造有序的磁性纳米结构对于先进的磁性存储和自旋电子设备至关重要.
- 在纳米尺度上控制纳米颗粒的组装和磁性质具有重大挑战.
研究的目的:
- 介绍一种简单的聚合物介导工艺,用于在固体基板上组装磁性FePt纳米粒子.
- 为了证明对FePt纳米粒子薄膜的组装厚度和磁性性能的控制.
- 为了探索制造磁性纳米设备的潜力.
主要方法:
- 使用聚合物 (PEI) 和磁性FePt纳米粒子吸附在基终结固体表面上.
- 使用热化来增强组装的纳米粒子薄膜的磁性.
- 应用激光辅助磁性写作来控制磁化方向.
主要成果:
- 实现了带有控制厚度和尺寸的光滑FePt纳米粒子组件.
- 在FePt纳米粒子组件中证明了铁磁性,在回火后只有三层薄.
- 通过激光辅助的磁性写作成功控制了磁化方向.
结论:
- 聚合物介导的组装工艺是有效的,用于创建薄,铁磁FePt纳米粒子薄膜.
- 这种方法为制造具有可调节性质的磁纳米设备提供了一个多功能平台.
- 该过程可以适应各种基质,纳米颗粒和宏分子.
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