# How does the saturation flux density affect magnetic field strength?

• yosimba2000
In summary, saturation flux density refers to the point at which there is no further increase in H-field when increasing the external B-field. This means that the core can only create fields up to the saturation flux, but it is unclear whether it can create a stronger field and accept the saturation flux as the maximum. For example, if a 1.5T magnet is paired with a core with a 1.5T saturation flux, it is unclear if the resulting magnet will be stronger than 1.5T or just a larger 1.5T magnet. This phenomenon occurs when all the spins of the material have the same direction, resulting in saturation flux density.
yosimba2000
So I'm confused what the Saturation Flux Density is referring to. Defintion says it is when you no longer get an increase in H-field when increasing external B-field.

So, does the satuation flux mean the core can only create fields UP TO that saturation flux, or that it can make a stronger field but accept at most the saturation flux?

For example, let's say I have a 1.5T magnet and a core with 1.5T saturation flux. When I pair the two, will the core give me a magnet STRONGER than 1.5T (say 2T), or will it just give me a larger 1.5T magnet?

Delta2
H-field comes from spin direction of the material. When all the spins have same direction they show saturation flux density.

berkeman

## 1. How does the saturation flux density affect the strength of a magnetic field?

The saturation flux density is the maximum amount of magnetic flux that a material can hold before it becomes saturated. This means that once the material reaches its saturation point, it cannot hold any more magnetic flux. As a result, the strength of the magnetic field will not increase any further, even if more current is applied.

## 2. What happens to the magnetic field strength when the saturation flux density is exceeded?

When the saturation flux density is exceeded, the material becomes saturated and the magnetic field strength will not increase any further. This means that the material has reached its maximum capacity for holding magnetic flux and any additional current will not result in a stronger magnetic field.

## 3. Is there a relationship between the saturation flux density and the strength of a magnetic field?

Yes, there is a direct relationship between the saturation flux density and the strength of a magnetic field. The higher the saturation flux density of a material, the stronger the magnetic field it can produce. This is because a material with a higher saturation flux density can hold more magnetic flux before becoming saturated.

## 4. How does the type of material affect the saturation flux density and magnetic field strength?

The type of material used can greatly affect the saturation flux density and magnetic field strength. Different materials have different saturation flux densities, which means they can hold different amounts of magnetic flux before becoming saturated. Materials with higher saturation flux densities will have a stronger magnetic field compared to materials with lower saturation flux densities.

## 5. Can the saturation flux density be changed to increase the strength of a magnetic field?

No, the saturation flux density of a material is a physical property that cannot be changed. Once a material reaches its saturation point, it cannot hold any more magnetic flux. However, the strength of a magnetic field can be increased by using a different material with a higher saturation flux density or by increasing the amount of current flowing through the material.

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