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Thermal magnetic wheel demonstrationThermal magnetic wheel demonstration ,This is our new creative series which used for junior middle school Innovation experimental ! new beautiful design and very eash to be used.
Ferromagnetic material is the magnetic moment of the adjacent atoms or ions due to their interactions, and in some regions are arranged substantially in the same direction, when the applied magnetic field strength increases, the regions of the combined magnetic moment orientation degree increased to a certain limit will follow the phenomenon.
When the temperature is high, due to the random thermal motion of the enhanced magnetic disappears, this critical temperature is called the Curie temperature (Curie temperature). When the temperature rises, the atomic spacing increased, reducing the exchange interaction, and continue to disrupt the thermal motion of randomly oriented magnetic moments, the spontaneous magnetization Ms decrease. Until the temperature is above the Curie point, that completely destroyed the rules of atomic magnetic moment orientation, spontaneous magnetic moment does not exist, by the ferromagnetic material becomes paramagnetic. Similarly, the magnetocrystalline anisotropy can be explained, magnetostriction.
On the turntable near the end of the magnet is heated, which had been magnetized wire lose their magnetism; while near the end of the wire because magnetized by a magnet, and therefore produce rotation.
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