What Is A Soft Magnetic Material

Soft magnetic materials, under the action of magnetization, Hc will not exceed 1000A/m. In the magnetic field, the external magnetic field with the smallest magnetic force can be selected to achieve maximum magnetization. Soft magnetic materials are characterized by easy magnetization and also facilitate the degradation of magnetic force. It is widely used in many factory equipment, such as electronic production equipment.

Soft magnetic materials were first used in industry, dating back to the late 19th century, but with the development of power technology, soft magnetic materials began to discover changes. Low carbon steel is used to manufacture production machinery and equipment, and some iron containing materials are used in the magnetic cores of telephone products to make the circuits more durable. With the development of technology, the development of silicon steel sheets has gradually replaced low-carbon steel materials, improving product performance and reducing energy consumption. Until now, silicon steel sheets are the most commonly used soft magnetic materials in the power industry. The improvement of technology not only improves the performance of soft magnetic materials, but also enables the invention of many products to appear in front of us. Nowadays, technicians have conducted more research and development on soft magnetic materials, synthesizing new alloy soft magnetic materials, which have been used and produced in many fields.

Performance of soft magnetic materials

1. Soft magnetic materials can be used in different situations, therefore they have different properties, usually in the state of static current or low frequency. In low-frequency magnetic fields, soft magnetic materials can enhance their magnetic force by at least 80%. Soft magnetic materials require high initial magnetic conductivity and high magnetic saturation. The smaller the magnetization retrieval constant, the more damage to the machine can be avoided, and metal or alloy materials should be used.

If it is under alternating magnetic fields, the hysteresis loop in the product should be smaller. Because the magnetic loss is proportional to the size and area of the hysteresis loop. When the current is in a low-frequency state, soft magnetic materials begin to require high magnetic conductivity, making the magnetization stronger. However, when used at high frequencies, the saturation of the magnetized product will be limited. If used at ultra-high frequencies, eddy current loss will be proportional to the square of the magnetization frequency. In this case, the soft magnetic material used needs to have high resistance, and the material is mostly ferrite.