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What is the meaning of remanence/Br?
If the magnetic Br is higher, the magnet is better?
How much is 1T in the magnet br?
Do you want to kown about these question? Today we will talk about "Br"
What is the meaning of magnetic remanence?(What is magnetic Br?)
Br as symbols of remanence(residual induction), remanence is short for remanent magnetization strength. It is one of the main magnetic parameters of the magnet, the full name is residual magnetic induction intensity, refers to the magnet after magnetization saturation, remove the external magnetic field, in the direction of the original external magnetic field still maintains a certain magnetization, the remanence is determined by the characteristics of the magnet itself (raw materials, processing technology, etc.), Under certain conditions, the remanence of the same magnet is constant and has a single value.
If the magnetic remanence is higher, the magnet is better?
If the shape, performance grade and size of the two magnets are exactly the same, then the surface magnetic field strength of the magnet with higher remanence will be stronger, and the suction force will be greater.
On the other hand, if the shape, performance or size of the two magnets is different, you can not simply use the strength of the surface magnetic to determine the size of the remanent magnetic.
Measurement of hysteresis curve and remanence;
Remanence is the intersection of the hysteresis curve and the vertical axis, that is, the B value of the starting point of the demagnetization curve, which is the magnetic induction intensity value in the magnet after the magnetic material is removed from the magnetic field. To measure the remanence of a magnet, it is necessary to draw the hysteresis curve of the magnet by professional instruments.
The unit of magnetic remanence:
There are three units: T, mT, Gs.
1T=1000mT=10000Gs
About the magnetic retentivity:
The retentivity of a substance is the maximum value which the residual flux density can attain.
The Instruments for measuring magnetic remanence:
We generally use gauss meter, Tesla meter, magnetometer, remanent magnetometer.
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