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Give a short description of soft ferrites.
Soft ferrites and their applications: all non- metallic compounds are consisting of ferric oxide and one or two bivalent metal oxides as Nickel oxide, Zinc oxide or Manganese oxide. They have the resistivity of about, 109 ohm-cm that decreases eddy current losses at high frequency. These magnets made out of this have high coercive force and square hysteresis loop. Magnetic permeability of such materials is as high as from 10,000 to 30,000. These materials are fabricated in shape as- E, U, I, beads and self - shielding pot cores.
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