High quality Y-type hexaferrite thick films for microwave applications by an economical and environmentally benign crystal growth techn

Аннотация

Thick barium hexaferrite Ba2Zn2Fe12O22 (i.e., Zn2Y) films having thicknesses of 100 lm wereepitaxially grown on MgO (111) substrates using an environmentally benign ferrite-salt mixture by vaporizing the salt. X-ray diffraction pole figure analyses showed (00l) crystallographic alignment with little in plane dispersion confirming epitaxial growth. Saturation magnetization, 4pMs, was measured for as-grown films to be 2.51 6 0.1 kG with an out of plane magnetic anisotropy field HA of 8.9 6 0.1 kOe. Ferromagnetic resonance linewidth, as the peak-to-peak power absorption derivative at 9.6 GHz, was measured to be 62 Oe. These properties demonstrate a rapid, convenient, cost-effective, and nontoxic method of growing high quality thick crystalline ferrite films which could be used widely for microwave device applications.