Neodymium magnets life span?

neodymium magnets life span?

A neodymium magnet (also known as NdFeB, NIB, or Neo magnet), a type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure. This material is currently the strongest type of permanent magnet.

The tetragonal Nd2Fe14B crystal structure has exceptionally high uniaxial magnetocrystalline anisotropy (HA~7 teslas). This gives the compound the potential to have high coercivity (i.e., resistance to being demagnetized). The compound also has a high saturation magnetization (Js ~1.6 T or 16 kG). Therefore, as the maximum energy density is proportional to Js2 this magnetic phase has the potential for storing large amounts of magnetic energy (BHmax ~ 512 kJ/m3 or 64 MG·Oe), considerably more than samarium cobalt (SmCo) magnets, which were the first type of rare earth magnet to be commercialized [1]. In practice, the magnetic properties of neodymium magnets depend on the alloy composition, microstructure, and manufacturing technique employed.

http://en.wikipedia.org/wiki/Neodymium_magnet

Category:

Science & Technology

Tags:

• neodymium
• magnet

[AcidicChip]

300+ years (N35+ grade) is the common answer to your question.

[sorindncs]

Just use a blowtorch on them and their lifespan will be only a few seconds long.

[nikdoddanavar]

144Nd (alpha decay with a half-life (T½) of 2.29×1015 years)

search for  life of Neodymium magnet

what r your plans to do with this magnet.

my email address nikdoddanavar@gmail.com.

[TheOnlyMunchkinSoup]

Do you even know what your talking about??

[jlawton22]

I ordered a 116kg pull n52 magnet :P Supposebly it loses 1% every 100 years as it dissipates to try and be neutral with the earths magnetosphere.

[origamiepicness]

Boring

[fayyt]

@massussuss lulz

[massussuss]

OH MY GOD, THIS IS FUCKING BORING!!! GET TO THE FUCKING POINT

[007jamesluna]

its 500

[Lethalis1234]

i just looked this up at like 5 different websites and they said about .93% of power every 15-20 years depending on conditions