Physics for Information Science: Unit III: Magnetic Properties of Materials
Ferrimagnetism and Ferrites
Properties
It is a special case of magnetic material and it is composed of two sets of different transition metal ions having different values of magnetic moment with antiparallel alignment.
FERRIMAGNETISM
AND FERRITES
It
is a special case of magnetic material and it is composed of two sets of
different transition metal ions having different values of magnetic moment with
antiparallel alignment as shown in Fig. 3.29.
Hence
these material have antiparallel magnetic moments of different magnitudes,
giving rise to fairly large magnetic moment in the presence of external
magnetic field (Fig. 3.30).
Properties
1.
The susceptibility is very large and is positive represented by
X
= C / T±Ɵ when T> TN
2.
Beyond the Neel temperature, X decreases.
3.
These materials have low eddy current losses, and low hysteresis losses.
4.
They have hysteresis loop in the form of a square and hence will have low
coercivity.
Physics for Information Science: Unit III: Magnetic Properties of Materials : Tag: : Properties - Ferrimagnetism and Ferrites
Physics for Information Science: Unit III: Magnetic Properties of Materials
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Physics for Information Science
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