Effects of glass addition on sintering and magnetic properties of 3Ba0.5Sr0.5O•2CoO•12Fe2O3 for high frequency applications

The effect of glass addition on the magnetic properties of 3Ba(0.5)Sr(0.5)O . 2CoO . 12Fe(2)O(3) (Co(2)Z) ferrites was investigated. The densification of Co(2)Z ferrites was enhanced by addition of glass due to the liquid phase sintering. Although the initial permeability decreased slightly, the quality factor was improved over a wide frequency range with the addition of glass. The resonant frequency shifted to a higher frequency range with increasing the addition of glass. Therefore, the addition of glass in Co(2)Z ferrites is an effective method to improve the magnetic properties for application in the radio frequency range. (C) 2001 Kluwer Academic Publishers.