Microstructure of materials

Fundamentally, the microstructure of a material determines its macroscopic properties, so it should be guided by magnetic quantum theory to analyze and improve the microstructure of materials to improve their macroscopic magnetic properties. The research on soft magnetic materials has changed from coarse-grained to nano-crystalline alloy material preparation and its composition design. The research of nanomaterials and the science of material design are developed based on this idea of macroscopic magnetic properties, that is, material design is carried out from the first principle. In terms of magnetic materials, with the development of modern science and technology, quantum theory has The successful interpretation of spin-ordered materials and the combination of quantum theory and micromagnetism have gradually achieved the goals of high saturation magnetic induction and low-loss soft magnetism.