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- W1990403417 abstract "An experiment was carried out to improve the magnetic properties of Sr-Zn-W-type hexagonal ferrite powders, and bonded magnets were prepared from these powders. It was found that W-type hexagonal ferrite is easily producible in the air by replacing the Fe2+ part with Zn2+. The preparation conditions for a typical sample were as follows; chemical composition: SrO·1.5ZnO·0.5FeO·8Fe2O3 with added 0.3 wt% SiO2, 0.7 wt% CaO, 1.0 wt% SrCO3; reaction sintering condition: 1300°C × 4.0 h in air; annealing condition: 1050°C × 5 min in air. The magnetic properties of Sr-Zn-W-type hexagonal ferrite powder are σs=92.9 × 10-6Wb·m/kg, HcJ=187.8 kA/m. The magnetic properties of hybrid (mixed 80% M-type ferrite powder and 20% W-type ferrite powder) bonded magnets are Br=295 mT, (BH)max=16.6 kJ/m3, HcJ=177 kA/m." @default.
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- W1990403417 date "2005-01-01" @default.
- W1990403417 modified "2023-09-25" @default.
- W1990403417 title "Magnetic Properties of Sr-Zn-W-Type Ferrite Powders Prepared by Reaction Sintering in Air and Production of Bonded Magnets" @default.
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- W1990403417 doi "https://doi.org/10.3379/jmsjmag.29.436" @default.
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