Formation of a polycrystalline thin film from a Prussian blue analogue (PBA) on insulating substrates through a chemical method is reported here. One of the typical PBAs, Ni-Co PBA, K0.4Ni2.8[Co(CN)6]2·nH2O, was selected to demonstrate the growth process. Silicon substrate surface is functionalized through a typical self-assembled monolayer process using aminopropyltrimethoxysilane (APTMS) to form relatively robust interface with PBAs through the coordination bonds with the terminal amino-groups of APTMS. Then, these amino-functionalized silicon wafers are used as anchors for the controlled assembly of homogeneous Ni-Co PBA thin films which shows several kinds of pyramidal structures on the surface. The obtained thin films exhibit paramagnetic properties at room temperature without a negative magnetization.
- Magnetic films
- Prussian blue analogue
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics