ferromagnetic
Strongly attracts magnets
Ferromagnetic describes materials that can be strongly magnetized and retain their magnetism—iron, nickel, cobalt, and their alloys.
These materials respond dramatically to magnetic fields and can become permanent magnets.
The property underlies everything from compass needles to hard drives: ferromagnetic materials in the motor, ferromagnetic nanoparticles.
physics
Areas of control or expertise
- spinsRotates rapidly around center
- hysteresisHistory-dependent system response
- magnetizationAcquiring magnetic polarity
- saturationState of complete permeation
materials
Element twenty-six
- nickelElement twenty-eight, or coin
- cobaltElement twenty-seven
- steelCarbon-hardened iron alloy
- magnetiteMagnetic iron ore
lodestone · alnico · gadolinium · neodymium · alloy
properties
Ability to transmit fluids
- remanenceResidual magnetization after demagnetizing
- anisotropyDirection-dependent property variation
- demagnetizationRemoval of magnetic properties
domains
Areas of control or expertise
- spinsRotates rapidly around center
- hysteresisHistory-dependent system response
- magnetizationAcquiring magnetic polarity
saturation · remanence · permeability · susceptibility · anisotropy
iron
Element twenty-six
magnetite · lodestone · alnico · gadolinium · neodymium · alloy
permeability
Ability to transmit fluids
- remanenceResidual magnetization after demagnetizing
- anisotropyDirection-dependent property variation
- demagnetizationRemoval of magnetic properties
electromagnet
Wire-wound magnetic device
- magnetismelectromagnet, permanent magnets, magnetization, electromagnets, demagnetize
- materialsmetal, metals, wood, ceramic, fabric
- magnetsmagnets, bar magnets, electromagnet, fridge magnets, lodestones
- element typesmetal, nonmetal, metalloid, noble gas, halogen
- matter statessolid, liquid state, plasma, vapor, gaseous