磁性纳米粒子在具有垂直各向异性的非晶磁性模板上的分层
Layering of magnetic nanoparticles at amorphous magnetic templates with perpendicular anisotropy
摘要：
我们揭示了从稀释的水基铁磁流体中将尺寸为5 nm、15 nm和25 nm的单分散磁铁矿纳米颗粒组装到具有面外各向异性的非晶磁性模板上。从中子反射实验中，我们提取的密度分布，并表明粒子自组装成层的磁性表面。这些层对基底的清洁和冲洗非常稳定。层的密度由颗粒的剩磁磁矩决定并随其增加。
英文摘要：
We reveal the assembly of monodisperse magnetite nanoparticles of sizes 5 nm, 15 nm and 25 nm from dilute water-based ferrofluids onto an amorphous magnetic template with out-of-plane anisotropy. From neutron reflectometry experiments we extract density profiles and show that the particles self-assemble into layers at the magnetic surface. The layers are extremely stable against cleaning and rinsing of the substrate. The density of the layers is determined by and increases with the remanent magnetic moment of the particles.
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