Neodymium Magnet: An Overview

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We all use neodymium magnets in one form or another; we do not know what we do. There are so many uses and advantages of this amazing piece of the human invention which we were unaware of.

One can easily find a neodymium magnet strips in the computer hard drive, headphones and loudspeaker to name a few. And this magnet is very strong and allows us to do things where a normal iron or ferrite magnets proved ineffective.

flexible strip

So what are neodymium magnets? Are they metal Mars who come from outer space? This is a rare earth magnet – an alloy composed of elements such as iron, neodymium, and boron. The chemical formula for this unique alloy is Nd2Fe14B.

More often one is likely to find in the form of a tetragonal crystal structure when it comes to a neodymium magnet. This alloy is easily the strongest permanent magnet available

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

Today these magnets produced through two forms of production – sintered (powder) and the bonded magnets. Approximately 45,000 to 50,000 tons of sintered magnets are produced each year in comparison with 5500 tons of bonded magnets. The difference can be attributed to the demand and supply issues.

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