I wasn't focusing on neodym magnets in particular but to create a magnet you need apply current, so to destroy you can do the same. If you look on different magnetic material specs it would be clear that neodym magnets require higher current, but still current (current ratings depend on magnet size). And with stronger magnets what we do? We make motors smaller.
Some of my posts based on information obtain from different sources (some of them might be not available anymore :( ) and some of them from personal experience. Google search brought me this link
http://www.cy-magnetics.com/hauptseite.htm some of the information and specs can be helpful.
Artur