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Commonly used terms in the Electrical industry.
ceramic ferrite
a relatively inexpensive permanent magnet material with decent coercivity and low energy product that is composed of strontium or barium oxide and iron oxide. Also called hard ferrite.
ferrite
a term applied to a large group of ceramic ferromagnetic materials usually consisting of oxides of magnesium, iron, and manganese. Ferrites are characterized by permeability values in the thousands and are used for RF transformers and high Q coils.
ferrite beads
small toroids made of fer-rites which are slipped over a conductor in order to suppress RF currents. The beads act as RF chokes at high frequencies.
ferrite core
a magnetic core made up of ferrite (compressed powdered ferrromagnetic) material, having high resistivity and low eddy current loss.
ferrite core memory
See
magnetic core memory
ferrite material
a material that has very low conductivity ( σ ) and very large permeability ( μ ). Its properties can be altered when an external magnetic field is applied. It is used in ferrite loaded loop antennas, for example, to increase the flux through the loop antenna.