Coercivity vs. Retentivity — What's the Difference?

The ability of a magnetic material to resist external demagnetizing fields.

The measure of residual magnetism in a material after removing the magnetizing force.

An intrinsic property of magnetic materials determining their resilience against demagnetizing forces.

An inherent magnetic characteristic that describes the retention capacity of magnetic materials.

The threshold of magnetic force required to nullify a material's magnetization.

The ability of a magnetic material to retain its magnetization.

A measure of the resistance of a magnetic material to becoming demagnetized.

The persistence of magnetization in a material post removal of the external magnetic field.

Magnetic field strength required to demagnetize a previously magnetized material.

The extent to which a magnetic substance maintains its magnetic state.

Coercivity, also called the magnetic coercivity, coercive field or coercive force, is a measure of the ability of a ferromagnetic material to withstand an external magnetic field without becoming demagnetized. Coercivity is usually measured in oersted or ampere/meter units and is denoted HC. An analogous property in electrical engineering and materials science, electric coercivity, is the ability of a ferroelectric material to withstand an external electric field without becoming depolarized.

The quality or state of being retentive.

The magnetic field intensity needed to reduce the magnetization of a ferromagnetic material from complete saturation to zero, usually measured in teslas.

Capacity or power of retaining.

(uncountable) The quality of being coercive

(Physics) The capacity for a body to remain magnetized after the magnetizing field has ceased to exert an effect.

The intensity of the magnetic field which must be applied in order to reduce the magnetization of a ferromagnetic material to zero after the magnetization of the sample has been driven to saturation

The ability to retain, potential for retention

(sciences) the capacity to retain magnetism after the magnetizing action

The power of retaining; retentive force; as, the retentivity of a magnet.

The power of retaining liquid;

Retentivity signifies a material's ability to retain its magnetization after the external magnetizing field is removed.

Yes, some materials can exhibit both high Coercivity and high Retentivity.

Retentivity ensures that permanent magnets maintain their magnetism over time, even without an external magnetizing force.

Coercivity determines the resistance of a magnetic storage material to data loss from external magnetic influences.

Coercivity is typically measured in oersteds (Oe) or amperes per meter (A/m).

Yes, some materials revert to a zero magnetization state after the removal of the magnetizing force, exhibiting zero Retentivity.

Both are important. Coercivity ensures data isn't easily erased, while Retentivity ensures data remains stored over time.

Coercivity is the intensity of an external magnetic field required to demagnetize a previously magnetized material.

A material with low Coercivity can be easily demagnetized by external magnetic fields.

Retentivity is vital in applications like permanent magnets, magnetic storage, and any domain where prolonged magnetism is desired.

While the term is primarily used in magnetism, "retentivity" can also refer more broadly to retention capacity in other contexts.

While related, they describe different properties. A material can have high Coercivity but low Retentivity and vice versa.

Not necessarily. Coercivity indicates resistance to demagnetization, but not the strength of the magnet itself.

Yes, through processes like annealing or alloying, the Coercivity of a material can be modified.

Yes, external factors like temperature, physical stress, or exposure to strong magnetic fields can affect a material's Retentivity.