Microwave properties of sphere-, flake-, and disc-shaped BaFe12O19 nanoparticle inks for high-frequency applications on printed electronics

Sami Myllymaki , M. Maček Kržmanc , Marcin Słoma , Jari Juuti , Mikko Nelo , Merja Teirikangas , Małgorzata Jakubowska , D. Suvorov , Heli Jantunen


Spherical (diameter 50–200 nm), flake- (diameter 40–200 nm), and disc-shaped (diameter 10–20 nm) BaFe12O19 nanoparticles were synthesized with a wet chemical method, and their permittivity, electric loss tangent, permeability, and magnetic loss tangent were measured in the 0.045–10 GHz range. The materials were prepared using a solution of 12% PMMA resin in a butyldiglycol solvent for 10–50 wt% filling content. Microstrip transmission-line perturbation was used to measure complex permeability and the split post dielectric resonator method was employed to measure dielectric properties. The frequency dependence of the permeability and permittivity spectra of the composites was affected by their shape and filling fraction. The composites made with spherical particles had higher permeability values (1.4–1.75) at 1 GHz than the composites made with flake (1.25–1.6) or disc particles (1.1–1.3), but the spherical particles caused more losses. The flake particle composite provided permeability and magnetic loss characteristics at both 1 GHz and 7 GHz superior to those of the sphere particle composite in low-loss RF applications. The magnetic loss tangent of PMMA/BaFe12O19 was 0.2–0.3 at 1 GHz, being lower than that of state-of-the-art PANI/BaFe12O19 composites. The sphere composite inks showed permeability values less than 1 at 1–4 GHz ferromagnetic resonance (FMR); they could be used as a tunable material in microwave applications. The sphere and flake composite inks also had sufficient printing quality for the screen-printing fabrication method.

Author Sami Myllymaki - [Oulun Yliopisto]
Sami Myllymaki,,
, M. Maček Kržmanc - [Jozef Stefan Institute]
M. Maček Kržmanc,,
, Marcin Słoma (FM / IMBE)
Marcin Słoma,,
- The Institute of Metrology and Biomedical Engineering
, Jari Juuti - [Oulun Yliopisto]
Jari Juuti,,
, Mikko Nelo - [Oulun Yliopisto]
Mikko Nelo,,
, Merja Teirikangas - [Oulun Yliopisto]
Merja Teirikangas,,
, Małgorzata Jakubowska (FM / IMBE)
Małgorzata Jakubowska,,
- The Institute of Metrology and Biomedical Engineering
, D. Suvorov - [Jozef Stefan Institute]
D. Suvorov,,
, Heli Jantunen - [Oulun Yliopisto]
Heli Jantunen,,
Journal seriesJournal of Magnetism and Magnetic Materials, ISSN 0304-8853
Issue year2016
ASJC Classification3104 Condensed Matter Physics; 2504 Electronic, Optical and Magnetic Materials
Languageen angielski
Score (nominal)30
Score sourcejournalList
ScoreMinisterial score = 30.0, 30-01-2020, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 30-01-2020, ArticleFromJournal
Publication indicators Scopus Citations = 5; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.172; WoS Impact Factor: 2016 = 2.63 (2) - 2016=2.36 (5)
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