嵌段共聚物PS-b-P4VP自组装法合成有序NiFe₂O₄纳米颗粒

Synthesizing NiFe₂O₄ Nanoparticles by Self-Assembly Diblock Polymer PS-b-P4VP

摘要: 本文利用嵌段共聚物poly(styrene-b-4-vinylpyridine) (PS-b-P4VP)自组装方法,在硅片上合成了准六角有序的镍铁氧(NiFe₂O₄)纳米颗粒阵列。X-ray光电子能谱证实了纳米颗粒具有NiFe₂O₄元素成份；原子力显微镜和扫描电子显微镜的图像显示NiFe₂O₄纳米颗粒具有10 nm的高度、33 nm的粒径和130 Gb/inch²的超高面密度；磁性质测试结果表明NiFe₂O₄纳米颗粒从低温(50 K)到室温范围都具有软磁特性。因此我们获得的这种磁性纳米颗粒阵列在微波电子器件领域具有潜在的应用价值。

Quasi hexagonally ordered NiFe₂O₄ nanoparticle array is synthesized by self-assembly diblock polymer (PS-b-P4VP) on silicon substrate in this paper. X-ray Photoelectron Spectroscopy confirms the element of NiFe₂O₄ nanoparticles. AFM and SEM images show that nanoparticles have tens of nanometer scales (height is about 10 nm, diameter is about 33 nm) and a high areal density (130 Gb per inch²). Magnetism measurements by PPMS imply soft ferromagnetism of NiFe₂O₄ nanoparticles from 50 K to 300 K. So the magnetic nanoparticle array has the potential application value in microwave device.

文章引用：舒川, 汤如俊, 杨浩. 嵌段共聚物PS-b-P4VP自组装法合成有序NiFe₂O₄纳米颗粒[J]. 应用物理, 2014, 4(3): 24-30. http://dx.doi.org/10.12677/APP.2014.43004

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