Electrical Engineering Material

1. ELECTRICAL ENGINEERING
MATERIALS: MAGNETIC MATERIALS
MR. ASIF L. JAMADAR

2. ANTIFERROMAGNETIC MATERIALS
 Magnetic moments of atoms
 Its theory developed by Neel
 Susceptibility as a function of temperature
 Antiferromagnetic materials are only of
scientific interest
 Relation of susceptibility with temperature of
an antiferromagntic material
χ m = C / (T – (– θ) ) 2

3.  θ has negative value
 The lattice magnetic ions breaks up into two sublattices
 Two interpenetrating and identical sublattices of magnetic ions

4. FERRIMAGNETIC MATERIALS (FERRITES)
 Magnetic moments of atoms
 Wide application in electrical engineering and having disadvantages
 Ferrites are complex oxide compounds of various metals and oxygen
 Ferrites are isomorphic with mineral spinel
 Typical examples of complex ferrites
 The general electric and magnetic characteristics of ferrites
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6. APPLICATIONS OF FERRIMAGNETIC MATERIALS (FERRITES)
 The applications of ferrites can be put broadly into four categories:
 Ferrites for permanent magnets
 Ferrites for transformers and inductors
 Data storage
 Microwave applications
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7. THANK
YOU
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