Microwave and magnetic properties of double-sided hexaferrite films on (111) magnesium oxide substrates

• Online Access: http://hdl.handle.net/2047/d20002256

We have deposited hexaferrite films of BaFe₁₂O₁₉ on both sides of a magnesium oxide, (111) MgO, substrate by the liquid phase epitaxy (LPE) deposition technique. The procedure entailed the deposition of seed layers of BaFe₁₂O₁₉ onto the substrate by laser ablation deposition and then dipping of the substrate into a molten flux. Whereas the seed layers were the order of 0.5 μm, the total thickness after LPE deposition was ∽45 μm. The ferrimagnetic resonance linewidth at 60 GHz, 27 Oe, is as low as it has ever been measured before in BaFe₁₂O₁₉ to the best of our knowledge. The static field measurements of the saturation magnetization and anisotropy field were in agreement with previous measured bulk values.