Inkjet-printed Mn-Zn ferrite nanoparticle core for fluxgate

0566937 - FZÚ 2023 RIV NL eng J - Journal Article
Hraková, D. - Ripka, P. - Laposa, A. - Novotný, D. - Kroutil, J. - Povolný, V. - Kaman, Ondřej - Veverka, Pavel
Inkjet-printed Mn-Zn ferrite nanoparticle core for fluxgate.
Journal of Magnetism and Magnetic Materials. Roč. 563, Dec (2022), č. článku 170003. ISSN 0304-8853. E-ISSN 1873-4766
R&D Projects: GA MŠMT(CZ) LM2018096
Institutional support: RVO:68378271
Keywords : fluxgate * soft magnetic nanoparticles * inkjet printing * flexible magnetic sensor * additive manufacturing
OECD category: Electrical and electronic engineering
Impact factor: 2.7, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.jmmm.2022.170003

Non-planar fluxgate sensors measuring the magnetic fields in the mu T range are required for electric current, position, and torque transducers. We report the first sensor based on an inkjet-printed 17 mm diameter ring core. The sensor wide open-loop linear range of +/- 1.5 mT allows to operate it without feedback. We describe the preparation of the very stable magnetic ink based on citrate-stabilized 13 nm diameter Mn-Zn ferrite nanoparticles that occur in superparamagnetic regime at room temperature. By printing 100 layers the total thickness of the inkjet-printed core was 2.2 mu m. The achieved sensitivity was 10 mV/mT for 25 kHz excitation frequency.
Permanent Link: https://hdl.handle.net/11104/0338203