Neodymium magnets are strongest of all kinds of permanent magnets. Neodymium magnetsare not found in nature but it was developed by General Motors and Sumitomo Special Metals in 1982 [1]. These are most widely used magnets in variety of applications where one require permanent magnetic field.
Different Shapes of Neodymium Magnet Blocks
Neodymium Magnets are a kind of rare earth magnets. Rare Earth Magnets are those magnets which are made using alloy of two or more rare earth elements. There are basically two kind of rare earth magnets, Neodymium and Samarium Cobalt. Neodymium magnets are stronger and cheaper than Samarium Cobalt magnets.
Neodymium magnets are also written and known as NdFeB, NIB or Neo Magnets. NdFeB is a short formula of Neodymium, Iron and Boron, alloy of these three element shows strong magnetic properties, which we use as Neodymium magnets. So, Neodymium magnets is an alloy or mixture of Neodymium (Nd), Iron (Fe) and Boron (B). Nd2Fe14B is the exact Chemical formula of Neodymium Magnet Alloy, these are arranged in tetragonal crystalline structure.
Sometimes Neodymium magnet blocks are so strong that you need to have special safety gears to handle them. Neodymium magnets can be used in variety of scientific fun-diy experimentation. Below is a video which demonstrates the destructive power of Neodymium magnets. They have used strong and Big Neodymium Blocks. Well, You may try this at home !
If you browse the magnets category on our store, You will find some grades like N42, N35 etc. with Neodymium Magnets. So what are these Grades ? Neodymium magnets are all graded by the material they are made of. As a very general rule, the higher the grade (the number following the ‘N’), the stronger the magnet. The highest grade of neodymium magnet currently available anywhere is N52.
Neodymium magnets are a composition of mostly Neodymium, Iron and Boron. If left exposed to the elements, the iron in the magnet will rust. To protect the magnet from corrosion and to strengthen the brittle magnet material, it is usually preferable for the magnet to be coated. There are a variety of options for coatings, but nickel is the most common and usually preferred. Some other options for coating are zinc, tin, copper, epoxy, silver and gold.
Rare Earth magnets have a high resistance to demagnetization, unlike most other types of magnets. They will not lose their magnetization around other magnets or if dropped. They will however, begin to lose strength if they are heated above their maximum operating temperature, which is 176°F (80°C) for standard N grades. They will completely lose their magnetization if heated above their Curie temperature, which is 590°F (310°C) for standard N grades.
Neodymium magnets have replaced alnico and ferrite magnets in many of the myriad applications in modern technology where strong permanent magnets are required, because their greater strength allows the use of smaller, lighter magnets for a given application. Some examples are:
An Interesting demonstration of Magnetic Levitation using Neo Magnets.
If you do not want to buy Neodymium Magnets from our Stores, its totally fine, I will suggest you a source where you can get high grade Neo Magnets for FREE ! Where ? Just open the Hard Disk of your PC
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