In the world of magnets, especially when dealing with neodymium iron boron (NdFeB) and ferrite magnets, one term that frequently arises is "surface magnetism."

Currently, most magnet manufacturers can produce N52 magnets. The theoretical BH maximum of NdFeB magnets is 512KJ/m3 (64mgoe) and the maximum BH of N52 has reached 90% of the theoretical limit. However, the question in many users' minds is, is there a stronger level than N52 magnet?