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FERRIMAGNETISM
NORASHIDA MOHD RAZALI,4SSCZ (Magnetization of…
FERRIMAGNETISM
NORASHIDA MOHD RAZALI,4SSCZ
Introduction
Properties
:full_moon:exhibit spontaneous magnetic moment,hysteresis below Tc.act as paramagnetic below Tc
:full_moon:magnetic moments align antiparallel,net magnetic moment non zero.
:full_moon:used in non-volatile memory device eg;hard drive (easily switch spins of electron,magnetized.
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Ferrimagnetic Materials
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:check:Ferrites
:check:electrically insulating transitional metal-oxides with MO.Fe2O3 where M can be:Mn2+,Fe2+,Ni2+,Co2+
:check:prepared by standard ceramic process
-->form wide shape,size for technological
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Temperature Dependence
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:fish:above Tc --> 1/χ relationship,further decrease in M
