Structural and magnetic properties of Fe-oxide layers prepared by inkjet printing on Si-substrate

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Authors

ZAŽÍMAL František SVOBODA Tomáš DZIK Petr HOMOLA Tomáš JIRÁSKOVÁ Yvonna

Year of publication 2021
Type Article in Proceedings
Conference NANOCON 2020: 12th International Conference on Nanomaterials - Research & Application
MU Faculty or unit

Faculty of Science

Citation
Web https://doi.org/10.37904/nanocon.2020.3682
Doi http://dx.doi.org/10.37904/nanocon.2020.3682
Keywords Inkjet printing; hematite; physical properties; testing methods
Description Magnetic films with two, four, six, and eight layers were prepared using 2D inkjet printing on the 333 K heated Si-substrates at ambient conditions. The microstructure, phase composition of layers, and magnetic studies were investigated using wide spectrum of experimental methods with the aim to find the optimal conditions for producing magnetic sensors by digital printing technology in the near future. As the magnetic compound, the hematite powder was chosen and its milling with Si-binder dissolved in dowanol using glass balls and vial to prevent contamination was done to prepared suspension appropriate for printing. It is shown that hematite transformed markedly into maghemite, thus the layers consisted of small amount hematite and dominant maghemite phases determining the magnetic properties. From the viewpoint of magnetic behavior, the highest saturation magnetization and the lowest coercivity was obtained at the sample with 8 layers.
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