Electrical Engineering Material

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

2. MAGNETIC ANISOTROPY
 Single crystal magnetic materials (e.g.
Iron)
 Magnetocrystalline Anisotropy
 Polycrystalline materials
 Material which subjected to specific
treatment (Induced Anisotropy)
 Example of induced anisotropy (Ni-Fe
alloy)
 Methods of uniaxial anisotropy,
 Cold working
 Magnetic annealing
2

3. MAGNETOSTRICTION
 Phenomenon of Magnetostriction
 Types of Magnetostriction
 Longitudinal Magnetostriction
 Transverse Magnetostriction
 Volume Magnetostriction
 Joule Magnetostriction
 λ is generally not greater than 30 X 10-6
 Villari effect is observed
 Largely theoretical interest and limited
3

4. THANK
YOU
4