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Structural, dielectric and magnetic properties of NiFe2O4 prepared via sol-gel auto-combustion method
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Mr value increases with the increasing grain size while Hc is just the opposite.

Ms achieve 50 emu/g when the sintering temperature is more than 1000 °C.

The lowest Hc value is 159.49 Oe for the NFO sample sintered at 1300 °C.

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