Neodymium Magnet and Attraction Towards It

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We all use a neodymium magnet in one form or the other. There are so many uses and advantages of this amazing piece of the human invention of which we are unaware of.

One can easily find a large neodymium magnet in a hard disk of a computer, headphones, and loudspeakers to name a few. And these magnets are immensely powerful and enable us to do things where normal iron or ferrite magnets prove ineffective.


So what are neodymium magnets? Are they a Martian metal that came from outer space? To your disappointment, there is no such conspiracy theory. It is a rare earth magnet – an alloy comprising of elements such as Iron, neodymium, and boron. The chemical formula for this unique alloy is Nd2Fe14B. More often one is likely to find crystalline structures in tetragonal shape when it comes to a neodymium magnet. This alloy is easily the strongest permanent magnet available

This neodymium magnet compound was discovered by General Motors Corporation, China Academy of Science and Sumitomo Special Metals in 1982. At that time there was a great need to find a suitable cost-effective replacement for SmCo permanent magnets because of its rising costs.

Today these magnets are manufactured via two production forms – sintered (powdered) and bonded magnet process. Approximately 45000 to 50,000 tons of sintered magnets are produced every year in comparison to 5500 tons of bonded magnet. The difference can be attributed to the demand and supply issue.

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