Preparation of Co2W Type Hexagonal Ferrite Used in the Load Side of Isolator
The BaCo2Fe16O27 ferrite particles have been prepared by sol-gel combustion technique. The products have been characterized by TG/SDTA, XRD, SEM and LPSA. The Microwave absorbing composite used in the load side of isolator with BaCo2-xZnxFe16O27 (x=0.0, 0.6, 1.0, 1.4, 2.0) as absorber have been prepared. The thermal degradation temperature of this kind of absorbing materials is 350 °C. When the average density is 2.62 g/cm3, the breakdown voltage is 1.4kV/mm. In the frequency range of 2 GHz-16 GHz, the absorption effects of BaZnxCo2-xFe16O27 (x=0.6, 1.4) are better than that of the single Co2-W or Zn2-W. In the frequency range of 9 GHz-16 GHz, the absorption loss of x=0.6 is better than others, which is in the range of 9.7~15.0 dB.
Chengming Li, Chengbao Jiang, Zhiyong Zhong and Yichun Zhou
J. Gong et al., "Preparation of Co2W Type Hexagonal Ferrite Used in the Load Side of Isolator", Materials Science Forum, Vol. 687, pp. 151-157, 2011