Coercivity of Neodymium magnets, could it be demagnetized in an MRI?

AI Thread Summary
An N45 Grade Neodymium magnet has a remanence of 1320 mT and a coercive force of 923 kA/m. The discussion highlights confusion regarding the relationship between coercive force in A/m and magnetic flux density in Gauss/Tesla. Placing an N45 magnet in a 2T MRI could potentially demagnetize it, as the magnetic field strength exceeds the magnet's coercive field, depending on the field direction. The relationship between magnetic flux density (B) and magnetic field strength (H) in air is given by B=μo H. Overall, using strong magnets in an MRI poses risks of altering their magnetic properties.
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An N45 Grade Neodymium Rare Earth magnet has a remnance (Br) of 1320 mT and Coercive force (Hcj) of 923 kA/m.

I am a little confused with the units of Coercive Force, how does A/m relate to Gauss/Tesla?

Also, if an N45 magnet was placed inside a 2T MRI, would that be strong enough to demagnetize it or change its magnetic properties?

Thank you.
 
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Corresponds to ##\mu_r \approx 1140##

Putting strong magnets in an MRI looks like a bad idea, but I don't know how that would influence the magnet.
 
The relationship between B and H in air is B=μo H.
The 2T correspond to a value of H higher that the coercive field of the magnet so it looks like it can be demagnetized by this field, if the field is in the right direction.
 

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