What is magnetic material? What are the classifications? Professional
The "hard" and "soft" here do not refer to the mechanical properties of the hard and soft, but the hard and soft magnetic properties. Magnetism simply refers to the magnetic material which can retain its strong magnetism for a long time after being magnetized by an external magnetic field, which is characterized by high coercive force. Coercive force is the magnetic field strength of a magnetic material that is magnetized and then demagnetization to reduce the residual magnetic (residual magnetic flux density or remanent magnetization) to zero. Soft magnetic material is a magnetic material with magnetic field, which is easy to magnetize and easy to demagnetization, i.e., the coercive force is very low. Demagnetization is the magnetic field that reduces the magnetic properties of the magnetic material after magnetization is added to the magnetic field (known as the magnetization field), and then to the magnetic field in the opposite direction of the magnetization field.
Permanent (hard) magnetic material and soft magnetic materials, magnetic materials, and magnetic materials, when the magnetic field is removed, can still have the magnetic material; soft magnetic material is when the magnetic field exists, with the magnetic induction intensity is very high, when the magnetic field is removed after the loss of magnetic materials.
Magnetic material is an important basic functional material in the electronic industry. Magnetic materials can be used to make magnetic functional devices, and they are called magnetic materials. The classification: permanent magnetic materials (also known as magnetic material), soft magnetic materials, magnetic materials, magnetostrictive materials, magnetic film, magnetic fluid, collectively termed magnetic functional materials.
Bonded permanent magnet binding permanent magnet refers to a magnetic plasticity powder made by mixing a plasticity substance as an adhesive and a permanent magnetic powder, and obtaining a composite magnet through the forming process of various plastic materials. In the whole process of forming, the binding agent changes biologically, and the magnet made of the magnetic particle bonded together is called a bonded magnet.
