Permanent Magnets

Permanent magnets are ferromagnetic or ferrimagnetic materials that retain their magnetization after being exposed to an external magnetic field, creating a stable magnetic flux. In vibration motor cores, they are precisely positioned to interact with electromagnetic coils, converting electrical energy into mechanical vibration through alternating attraction and repulsion forces. These magnets provide the foundational magnetic field required for the motor's operation, eliminating the need for continuous electrical excitation and ensuring energy efficiency.

Permanent magnets operate based on the alignment of magnetic domains within their material structure, producing a constant magnetic field. In a vibration motor core, when an alternating current passes through the electromagnetic coils, it creates a varying magnetic field that interacts with the permanent magnet's fixed field. This interaction generates oscillating forces (Lorentz forces) that cause the motor's moving parts to vibrate, translating electrical signals into mechanical motion for applications like haptic feedback or vibration alerts.