1. Ferrites are used to produce low frequency ultrasonic waves by magnetrostriction principle. Further these are used in the electromechanical transducers.
2. Ferrite rods are used in radio receivers (particularly in medium wave coil) to increase the sensitivity and selectivity of receiver.
3. Ferrite like nickel zinc ferrite are used as cores in audio and T.V.transformers.
4. Since for ferrites eddy current loss and hysteresis loss are small at microwave frequencies, the are widely used in non –reciprocal microwave devices like gyrator which is a two port unit transmitting power freely in two direction but width a differential phase shift of radians between 1them ,circulator which is a multiport unit providing sequential transmission of power between ports but with finite phase shift between them and isolator which is a two port unit displaying differential attenuation . High resistivities with low hysteresis loss magnesium manganese ferrite are used in above devices.
5. Based on nonlinear tensor permeability property, ferrite can also be used in devices for power limiting and harmonic generation.
6. A ferromagnetic amplifier of microwave signals using ferrites can be designed utilizing spin precession of large amplitude as the coupling element. The use of ferrites in these parametric amplifiers provides very low noise.
7. Ferrites are also used in digital computers and date processing circuits normally here ferrites with rectangular hysteresis loops are used as magnetic storage elements
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