These are also called as permanent magnets. These materials will have the ability to reverse their polarity of their magnetization without any particular amount of energy needed to reverse the magnetic polarity. Coercivity is the magnetic field intensity needed to demagnetize the ferromagnetic material from complete saturation state to zero. These are classified according to the magnetic coercivity.
Mostly easily magnetized material combinations are used such as manganese and zinc (MnZn), nickel and zinc (niZn).įerrites are mainly two types they are soft ferrites and hard ferrites. The general composition of ferrites is XFe 2O 4. They consist of mixed metal oxide of iron and other elements to form crystalline structures. inductor with iron coreįerrite is also referred as ferromagnetic material. When compared with other core indictors these have very limited applications. These are applicable in audio equipments. In the areas where low space inductors are in need then these iron core inductors are best option.These inductors have high power and high inductance value but limited in high frequency capacity. These are mainly used in high frequency applications where low inductance values are required. The main advantage of these inductors are very low core losses, high Quality factor. In some cases it will also provide the structure to hold the terminals in place. Its main aim is to give a form for the coil. Since ceramic has no magnetic properties, there is no increase in the permeability value due to the core material.
Ceramic has very low thermal co-efficient of expansion, so even for a range of operating temperatures the stability of the inductor’s inductance is high. Ceramic is the most commonly used material for inductor cores.
Depending on their material type they are basically categorized as followsĬeramic core inductors are referred as “ Air core inductors”.
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