ferrites
Iron oxide compounds
Ferrites are ceramic compounds containing iron oxide combined with other metallic elements, prized for their magnetic properties.
They're used in electronics—transformer cores, inductors, and the magnets in speakers and hard drives.
Ferrite beads suppress high-frequency noise in cables.
The material is hard, brittle, and electrically non-conductive, making it useful where metal magnets would cause interference.
Components storing magnetic energy
- transformersVoltage-altering electrical devices
- antennasSignal-receiving apparatus
- filtersSelective passage barriers
- circulatorsDevices that move fluid
isolators · permanent magnets · RFID · wireless charging · noise suppression · loudspeakers · sensors
Hardened clay objects
- iron oxideFe plus oxygen
- polycrystallineHaving many crystal grains
- bariumSoft silvery alkaline element
- strontiumAlkaline earth element 38
manganese · nickel · zinc · cobalt · spinel · garnet · sintered · yttrium
Doughnut-shaped geometric surface
- permeabilityAbility to transmit fluids
- hysteresisHistory-dependent system response
- saturationState of complete permeation
- air gapEmpty interval between objects
bobbin · winding · transformer · choke · inductor · shielding · power supply · flyback
Ability to transmit fluids
- remanenceResidual magnetization after demagnetizing
- saturationState of complete permeation
- anisotropyDirection-dependent property variation
- domainArea of control
magnetization · demagnetization · permanent magnet · frequency response
inductors
Components storing magnetic energy
- transformersVoltage-altering electrical devices
- antennasSignal-receiving apparatus
- filtersSelective passage barriers
circulators · isolators · permanent magnets · RFID · wireless charging · noise suppression · loudspeakers · sensors
ceramics
Hardened clay objects
- iron oxideFe plus oxygen
- polycrystallineHaving many crystal grains
- bariumSoft silvery alkaline element
strontium · manganese · nickel · zinc · cobalt · spinel · garnet · sintered · yttrium · magnesium
toroid
Doughnut-shaped geometric surface
- permeabilityAbility to transmit fluids
- hysteresisHistory-dependent system response
- saturationState of complete permeation
air gap · bobbin · winding · transformer · choke · inductor · shielding · power supply · flyback · switching
permeability
Ability to transmit fluids
- remanenceResidual magnetization after demagnetizing
- saturationState of complete permeation
- anisotropyDirection-dependent property variation
domain · magnetization · demagnetization · permanent magnet · frequency response
ferritescopper
Reddish-brown metallic element
silver · aluminum · conductors · electrical conductors · metals