Soft ferrite is a ferromagnetic oxide mainly composed of Fe2O3. It is produced by powder metallurgy, mainly including Mn Zn, Cu Zn, Ni Zn, etc. among them, Mn Zn ferrite has the largest output and consumption, and Mn Zn ferrite has a low resistivity of 1 ~ 10 ohms / meter, which is generally used at frequencies below 100kHz. The resistivity of Cu Zn and Ni Zn ferrites is 102 ~ 104 ohm / m. The loss in the 100kHz ~ 10 MHz radio frequency band is small. They are mostly used in radio antenna coils and radio intermediate frequency transformers.
Application range of soft ferrite magnet
At present, ferrite soft magnets are mainly used in the fields of communication, home appliances and new energy in China. In the future, soft magnetic materials will be mainly used in high-end consumer and industrial electronics, new energy, cloud computing, Internet of things, 4G and 5g communications, power supply and other new infrastructure markets and new consumer electronics.
What are the performance characteristics of soft ferrite?
The minimum external magnetic field can be used to achieve the maximum magnetization. It has low coercivity and high permeability, and is easy to magnetize and demagnetize. Generally, the hysteresis loop of soft magnetic materials is very narrow, and the coercivity is below 100a/m.
The above is an introduction to the main application fields and performance characteristics of soft ferrite. The article is edited by carrich Xiaofu, a ferrite manufacturer.
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