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

Autor: Hu, Bolin, Yajie Chen, Gillette, Scott, Su, Zhijuan, Wolf, Jason, McHenry, Michael E., Harris, Vincent G.
Předmět:
Zdroj: Applied Physics Letters; 2/17/2014, Vol. 104 Issue 7, p072411-1-072411-4, 4p, 1 Diagram, 1 Chart, 3 Graphs
Abstrakt: Thick barium hexaferrite Ba2Zn2Fe12O22 (i.e., Zn2Y) films having thicknesses of μ100 μm were epitaxially 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, 4πMs, was measured for as-grown films to be 2.51±0.1 kG with an out of plane magnetic anisotropy field HA of 8.9±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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index