Magnetic and microwave properties of ferrimagnetic Zr-substituted Ba2Zn2Fe12O22 (Zn-Y) single crystals

초록

Single crystals of Zr-substituted Zn-Y (Zr-ZnY; Ba2Zn2ZrxFe12-xO22) were grown from the flux system of BaCO3 and B2O3 by a high temperature slow cooling flux method. X-ray diffraction pattern confirmed the crystal structure with Zn-Y composition. The single crystals were characterized for magnetic and microwave properties. The measured anisotropy field (H-A) and the in-plane magnetization (sigma(s)) are 13 kOe and 52.0 emu/g, respectively. Ferrimagnetic resonance measurements show 18 Oe of linewidth (Delta H) at 9 GHz. The combination of low Delta H with a high H-A in Zr-ZnY hexaferrite is suitable for microwave devices, which can operate with low external biasing field. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3560885]

키워드