Magnetic and microwave properties of basal-plane oriented BaFe₁₁In1O₁₉ ferrite thick films processed by screen printing
Originally published in Journal of Applied Physics 103, 07F710 (2008). DOI:10.1063/1.2829905 (http://dx.doi.org/10.1063/1.2829905).
In-doped BaFe₁₁In1O₁₉ particles were prepared by a modified ceramic reaction using In2O₃, BaCo3, and Fe₂O₃ followed by mechanical dispersion. X-ray diffraction analysis confirmed the formation of pure BaFe₁₁In1O₁₉ phase and scanning electron micrographs showed platelet particles of about 1 μm in diameter. This powder was subsequently screen printed on alumina substrate using a suitable binder and oriented under a dc magnetic field of 15 kOe. The screen printed films were annealed at different durations to produce dense and thick ferrite materials. The hysteresis loops for the as-prepared and annealed screen printed, in-plane oriented films show a hysteresis squareness ratio (Mr/Ms) of 0.93, saturation magnetic moment of 4000 G, and coercivity of 634 Oe. The ferrimagnetic resonance measurements showed a linewidth (Δ H) ∽860 Oe. The g (Lande spectroscopic splitting factor) value deduced from the relation between resonant frequencies versus resonance field for the screen printed films was found to be 1.91.
C. N. Chinnasamy, T. Sakai, S. Sivasubramanian, Aria F. Yang, C. Vittoria, and V. G. Harris. "Magnetic and microwave properties of basal-plane oriented BaFe₁₁In1O₁₉ ferrite thick films processed by screen printing" Electrical and Computer Engineering Faculty Publications (2008).
Available at: http://works.bepress.com/vharris/49
magnetic_and_microwave_properties_fig2.zip (1556 kB)
magnetic_and_microwave_properties_fig3.zip (2444 kB)
magnetic_and_microwave_properties_fig4.zip (31 kB)
magnetic_and_microwave_properties_fig5.zip (13 kB)