Soft Ferrites vs Hard Ferrites Detailed

Ferrite has a soft ferrite and hard ferrite, this knowledge is part of the people still know, so today this article to explain a little more professional, including their respective characteristics and differences.

One of the characteristics of soft ferrite is its low coercivity, which allows it to be easily magnetized or demagnetized. These magnets have a high initial magnetic permeability, also known as ferrite cores. Typical examples include manganese zinc ferrite and nickel zinc ferrite, which do not have magnetism and are mainly used in high-frequency AC circuits such as transformers and inductors. They are also used in electromagnetic interference (EMI) suppression components such as magnetic core materials in filters.

Below is the soft ferrite magnetic bar 60x15x5mm for induction cooker

Hard ferrite is the opposite of soft ferrite, as it has a higher coercivity and is not easily altered by external magnetic fields to change its magnetic state. Even without an external magnetic field, hard ferrite can maintain its magnetism. Due to its permanent magnetic properties, hard ferrite is often used as a permanent magnet and has wide applications in fields such as motors, speakers, and sensors.

Hard Ferrite Products: Sintered Ceramic Ferrite Magnets

Comparison of the differences between soft and hard ferrites;

Difference in magnetic properties: soft ferrite high permeability, low coercivity, easy to magnetize and demagnetize, in the weaker magnetic field can be magnetized to saturation, and after removing the external magnetic field, the residual magnetism is very small . Hard ferrite has high coercivity, not easy to demagnetize after magnetization, can retain magnetism for a long time, and the residual magnetism is larger.

In terms of hysteresis curve, soft ferrite has a narrow and skinny hysteresis loop with small hysteresis loss. Hard ferrites have wide and square hysteresis loops with large hysteresis losses.

Difference in use: soft ferrite is mainly used for high-frequency alternating current circuits, various inductive components, while hard ferrite is more often used as a permanent magnet.

Mechanical properties of the difference: soft ferrite texture is relatively brittle, but compared to hard ferrite, its toughness is slightly better. Hard ferrites are very brittle and easily broken under mechanical impact.

I believe that by comparing these explanations and differences, you can better understand the differences between the two types of ferrites and choose the most appropriate material for your specific application needs.

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