Electrical Engineering Material

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

2. CLASSIFICATION OF MAGNETIC MATERIALS
 With respect to magnetic behavior, the magnetic materials are classified as
 Diamagnetic Material
 Paramagnetic Material
 Ferromagnetic Material
 Antiferromagnetic Material
 Ferrimagnetic Material
 Manifestation of magnetic behavior
 The equivalent atomic current loops are characterized by their magnetic
dipole moments
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3. 3
 Diamagnetism has its origin in the circular
charges in the orbits
 When the individual dipoles do not interact
with each other………(Paramagnetic
behavior)
 Ferromagnetic bahavior
 Antiferromagnetism or ferrimagnetism

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5. DIAMAGNETISM
 Diamagnetic is nothing but negative magnetic substance
 The value of susceptibility for a diamagnetic and ferromagnetic material
is given by the relation,
Xm = μr – 1= M/H
 Diamagnetic has no ordinary practical uses
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6. PARAMAGNETISM
 Definition of paramagnetism
 If no opposing force act…....
 Weak magnetization, and small positive susceptibility
 Susceptibility in paramagnetism
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7. FERROMAGNETISM
 Characteristics of Ferro magnetism
 Magnetization arises spontaneously
 Ferromagnetic Curie temperature
 Ferromagnetic Behavior below Curie Temperature Tc
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8. THANK
YOU
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