Nickel Copper Ferrites for Microwave Applications
- 1 July 1956
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 27 (7) , 723-727
- https://doi.org/10.1063/1.1722472
Abstract
Ferrites having both high relative density (∼98%) and high dc resistivity (>109 ohm-centimeters) can be prepared by properly sintering nickel copper ferrites which have both an iron deficiency and a small amount of manganese or cobalt present. Magnetic saturation at room temperature shows a linear dependence upon copper content in this system varying from 3150 gauss for NiFe1.9Mn0.02O4± to 2400 gauss for furnace cooled CuFe1.9Mn0.02O4±. Direct current resistivity remains high for mixtures of these two ferrites if 2Cu<Ni. An anomalous break in the curve relating dc resistivity with copper content occurs when the copper to nickel ratio exceeds this 1:2 value.This publication has 2 references indexed in Scilit:
- High-Resistivity Nickel Ferrites—the Effect of Minor Additions of Manganese or CobaltThe Journal of Chemical Physics, 1956
- Behavior and Applications of Ferrites in the Microwave RegionBell System Technical Journal, 1955