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 …

矫顽力（coercive force）是指磁性材料在饱和磁化后，当外磁场退回到零时其磁感应强度B并不退到零，只有在原磁化场相反方向加上一定大小的磁场才能使磁感应强度退回到零，该磁场称为矫顽磁场，又称矫顽力。

矫顽力（coercive force）是指 磁性材料 在饱和磁化后，当外磁场退回到零时其 磁感应强度 B 并不退到零，只有在原 磁化场 相反方向加上一定大小的 磁场 才能使磁感应 强度 退回到零，该磁场称为矫顽磁场，又称矫顽力。[1]

有二種磁化反轉的方式： 单域 （ 英语 ： single domain (magnetic) ） 旋转及 磁畴壁 （ 英语 ： Domain wall (magnetism) ） 運動。當材料的磁化強度因单域旋转而反向時，磁化強度延著外加磁場方向的分量為零，磁化強度會垂直外加磁場。

Magnetic coercivity is a measure of the resistance of a material to becoming demagnetized when exposed to an external magnetic field. It is the amount of magnetic field strength required to reduce the magnetization of a material to zero.

The magnetizing force, -Hc, is called coercivity. It is the amount of magnetizing force required to bring the remanence flux density back to zero. Permeability, fi The permeability of a magnetic material is a measure of the ease in magnetizing the material. Permeability, u, is the ratio of the flux density, B, to the magnetizing force, H. D

Coercivity is also known as coercive force. Since the coercive force is much lower for soft magnetic materials, it makes sense to use them for applications where the polarity will be reversed often.

A magnet with strong coercive force will withstand opposing magnetic fields from cyclic events such as seen in automotive and industrial electric motors. It will also withstand harmonic frequencies and noise much better than a magnet with lower Coercivity.

Feb 26, 2024 · The magnetic field needed to demagnetize the magnetic material completely is known as coercivity. The coercivity can be well used in permanent magnets to determine the withstand strength of the magnetic material.

Coercive forces, sometimes also referred to as magnetic memory, that are required to reverse the internal magnetic field are often dependent on particle size in the nanometer regime. Particle size dependence of coercivity ( H c ) of NP-based magnetic materials has …