“AlNiCo sag” is probably a foul time period to use to describe the phenomena with AlNiCo speakers. However what it is referring to is how if you place an AlNiCo magnet into a strong magnet subject (like a speakers voice coil) it is going to temporarily reorient some of the magnetic poles of the molecules within the magnet to align with outside magnetic field thus making the AlNiCo magnet itself much less strong. It is just a brief phenomena and the magnetic poles realign as quickly as you take away it from that magnetic field. So basically, the magnetic subject of the voice coil in an AlNiCo speaker quickly weakens the AlNiCo magnet. Ceramic magnets are more strong on this sense and do not change a lot when positioned into an external magnetic area. That is why AlNiCo speakers are stated to compress extra at high volumes.
Alnico Magnets are extraordinarily resistant to heat and corrosion and might operate at temperatures as much as 500C. Whereas Alnico magnets have very high Br values, comparable with NdFeB and SmCo they’re simply demagnetised by external fields, but cautious design can minimise this. We may also help advise easy methods to minimise these issues. With appropriate designing, Alnico can be a really highly effective magnet with a excellent temperature characteristic that no different master magnetics neodymium super magnet Suppliers can match. It may also be used for applications where superb tuning is advantageous.
Moreover, another molecules have a repulsive diamagnetic property together with water, of which there’s a lot more of than iron in your physique. Thus, even an excellent highly effective magnet like in an MRI only has a miniscule effect on the iron if any, which is why it’s safe so that you can be inside one.