Magnetic Ceramics: II, Properties of Magnetite and Manganese Ferrite Fired in Various Atmospheres |
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| Authors: | GEORGE ECONOMOS |
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| Affiliation: | Laboratory for Insulation Research, Massachusetts Institute of Technology, Cambridge, Massachusetts |
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| Abstract: | Magnetite and manganese ferrite, fired in various atmospheres, were tested for initial a.-c. permeability, for quasi-static hysteresis characteristics of Bm, Br , and Hc , and for resistivity. Optimum properties were obtained for magnetite made under exactly controlled oxygen pressures and for manganese ferrite fired in a CO2 atmosphere. These data are discussed with reference to the resistivity as affected by probable cation distribution. |
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