Broadly speaking, all can be magnetized magnetic field, in practice the main use of the magnetic properties of the material has a class of material becomes magnetic. It includes a hard magnetic materials, soft magnetic materials, semi-hard magnetic materials, magnetostrictive materials, magneto-optical materials, magnetic bubble materials and magnetic refrigeration materials, which is the largest amount of hard magnetic materials and soft magnetic materials.
The main difference between the hard magnetic materials and soft magnetic materials are anisotropic hard magnetic materials, high field, high coercivity magnetic hysteresis loop area, technology saturation magnetization of a magnetic field required is large. Due to the low coercivity soft magnetic materials, technology and after saturation magnetization to remove the external magnetic field, it is easy to demagnetization, and a hard magnetic material due to the higher coercivity, saturation magnetization by the technical and after removing the magnetic field, it is still a long-term holding strong magnetic, so hard magnetic materials, also known as magnetic materials or permanent magnetic material.
Ancient times, people use natural magnetite ore grinding into a desired shape, to guide or attract iron device, the compass is one of the four great inventions of ancient China, to human civilization and social progress made important contributions. Modern research and application of magnetic materials began after the industrial revolution, and rapid development in a short time. Today, research and application of magnetic material in terms of the breadth or depth were previously unmatched, all kinds of high-performance magnetic materials, in particular the development and application of rare earth permanent magnet materials for the development of modern industry and high-tech industry plays a huge role in promoting.
First, the definition of magnetic tile: magnetic tile talking about here is a permanent magnet in a permanent magnet motor is mainly used in the tile-shaped magnets.Second, the magnetic tile classification: magnetic tile depending on their raw materials are mainly three categories:1, ferrite magneti
The ferrite is made of iron oxide and other ingredients. Generally can be divided into permanent ferrite, soft ferrite and rotating ferrite three.Permanent magnet ferrite, also known as ferrite magnet, is what we usually see the black small magnet. Its composition of raw materials are mainly iron ox
Rubber Magnet is a kind of ferrite insulator series, which is made of flexible, elastic and distorted by the process of combining ferrite magnetic powder with synthetic rubber, extruded, calendered and injection molding.