Large-scale chemical synthesis of shape and size controlled BaFe₁₂₋ₓScₓO₁₉ platelets for in-plane oriented thick screen printed films
Originally published in Journal of Applied Physics 103, 07E515 (2008). DOI:10.1063/1.2839599 (http://dx.doi.org/10.1063/1.2839599).
Scandium (Sc) doped, single phase BaFe₁₂₋ₓScₓO₁₉ (x=0.3 and 0.8) were prepared at large scale (10 g) by a modified chemical coprecipitation technique. The scanning electron micrograph analysis shows the formation of nearly uniform hexagonal platelets with an average size of < 1 μm. The sizes of the platelets were controlled by sintering temperature. The screen printed, in-plane oriented films were annealed at different temperatures to produce a dense and thick ferrite film. The hysteresis loops for x=0.3 show a squareness ratio of 0.9 and the saturation magnetic moment of 3700 G and the coercivity of 250 Oe. The saturation magnetic moment was decreased with increase of Sc substitution. Ferromagnetic resonance measurements exhibited a peak-to-peak derivative linewidth (Δ H) of similar to 800 Oe at 34 GHz for x=0.3 and at 37 GHz for the x=0.8 film. The Lande spectroscopic splitting factor (g) value for the screen printed films was found to be 1.92 for x=0.3 and 2.01 for x=0.8.
T. Sakai, C. N. Chinnasamy, S. D. Yoon, A. Geiler, C. Vittoria, and V. G. Harris. "Large-scale chemical synthesis of shape and size controlled BaFe₁₂₋ₓScₓO₁₉ platelets for in-plane oriented thick screen printed films" Electrical and Computer Engineering Faculty Publications (2008).
Available at: http://works.bepress.com/vharris/33