Thick-Film Ferrimagnetic Pastes Using Lithium Ferrite

The preparation of a thick-film ferrimagnetic paste using lithium ferrite powders and its physical, electrical, and magnetic properties are described. A resonance technique for the measurement of the dielectric constant, saturation magnetization, loss tangents, and resonance linewidth of the ferrite films at microwave frequencies is presented. Applicability of the ferrite pastes developed for the fabrication of nonreciprocal microwave components such as isolators and circulators is described.