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MAGNETIC HYSTERESIS (NORASHIDA MOHD RAZALI,4SSCZ) (Introduction (maghys1,…

- - - - :smile:H=0,remnant magnetization remain -->retentivity point(+Br)
        
        :smile:remove remnant magnetization;coercive H applied in reverse direction.
        
        :smiley:B=0 -->cancelation of dipole moments in opposite direction=coercivity point (-Hc)
        
        :smiley:H increase in-ve direction,saturation occur in opposite direction(-Hs)
        
        :smiley:loop continue with equal,opposite retenvity point(-Br) and coercivity point(-Hc) until original saturation point(+Hs)
  - - - :smiley:ferro becoma para due to thermal fluctuations in magnetic dipole moments -->spin disorient.
- - - - :fire: soft magnetic material--> alternating magnetic field - narrow hysteresis shapes.
        :fire:hard magnetic material-->wide hysteresis shapes,utilized in permanent magnet with high resistance to demagnetization.
        -demagnetization harder due to large area to cover when reverse loop back to original paramagnetic state