Abstract
The effects of composition, post sintering, and operating temperature in a square‐loop ferrite system of interest for performing logic functions in digital telemetry applications are described. Ceramic processing methods used in preparing the multiaperture ferrite cores for this study are also described. Magnetic hysteresis loop characteristics of squareness ratio (Ra), magnetic induction switched (δBm), critical switching field (Hc, and maximum permeability (μm,) are reported as a function of zinc concentration in the system Mg0.5‐tMn0.8ZnxFe1.7O4abc. These characteristics are also investigated as a function of the post‐sintering treatments of air quenching and nitrogen annealing for the composition Mgo.35Zn0.15 Isel Essentially identical results are obtained for both the air‐quenching and the nitrogen‐annealing treatments. Significant hysteresis loop characteristics are shown at various operating temperatures in the range −78° to + 100°C.
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