Nano Zinc Oxide For Magnetic Materials

Magnetic materials are the basis for the development of the electronic information industry. The characteristics of nano-magnetic materials are different from conventional magnetic materials. The reason is that the characteristic physical length related to magnetism is just on the order of nanometers. For example, the size of magnetic single domain, the critical size of superparamagnetism, the length of exchange interaction and the mean free path of electrons are roughly in the order of 1-100nm. When the size of the magnetic body is equivalent to these characteristic physical lengths, abnormal magnetism will appear. nature.

Nanomaterials used as soft magnetic materials have very excellent properties, such as high permeability, low loss, high saturation magnetization, etc., and have been used in switching power supplies, transformers, sensors, etc., which can realize the miniaturization, lightness, and High frequency and multifunctionality have developed rapidly in recent years.

For example, manganese-zinc ferrite widely used in industry is a soft magnetic material with good magnetic properties. The manufacturing process of the magnetic material is extremely complicated and needs to be sintered at 1300°C. If nano zinc oxide is used as the raw material, not only the manufacturing process can be simplified, but also the "uniformity" and magnetic permeability of the product can be improved, and the burning of the product The loss of rupture during the process reduces the sintering temperature and significantly improves the product quality.