Embedding superparamagnetic iron oxide nanoparticles (SPIONs) in functional thin films is of high interest for nanocomposites as well as for biomedical applications. However, there is still the need for high-resolution mapping of the hidden nanoparticles. Magnetic force microscopy (MFM) has proved to be a suitable technique to image SPIONs at ambient conditions and provide information about spatial distribution, size, and magnetic behavior in a single pass. This work reports on high-resolution mapping of magnetite nanoparticles of various sizes embedded in polymer films of various thicknesses. A quantification of the magnetic signals is used to determine the size of the magnetic core of the embedded nanoparticles.
|Number of pages||8|
|Journal||Physica Status Solidi (A) - Applications and Materials Science|
|Publication status||Published - 2019|
- embedded nanoparticles
- magnetic force microscopy
- magnetic interaction
- superparamagnetic nanoparticles