Neodymium Iron Boron magnets have some advantages over Samarium Cobalt magnets. Neodymium Iron Boron magnets are less expensive, since the main elements Nd and Fe are abundant, and are mechanically stronger. High energy products can be ...
Many materials have unpaired electron spins, and the majority of these materials are paramagnetic. When the spins interact with each other in such a way that the spins align spontaneously, the materials are called ferromagnetic (what ...
Chronic low back pain is one of the most prevalent and costly medical conditions in the United States. Permanent magnets have become a popular treatment for various musculoskeletal conditions, including low back pain, despite little scientific ...
Many strong permanent magnets have been made from alloys of aluminum, nickel and cobalt with iron. Alnico and alcomax are two of the trade names of such alloys. Small amounts of Cu, Ti and Nb may also ...
Centuries ago, it was discovered that certain types of mineral rock possessed unusual properties of attraction to the metal iron. One particular mineral, called lodestone, or magnetite, is found mentioned in very old historical records (about ...
Coercivity and Remanence in Permanent Magnets Permanent magnets refer to magnets that can maintain their magnetic properties for a long time, that is, general magnets used in our daily life, such as natural magnets (magnetite) and ...
Rare earth magnets are strong permanent magnets made from alloys of rare earth elements. Developed in the 1970s and 80s, rare-earth magnets are the strongest type of permanent magnets made, substantially stronger than ferrite or alnico ...
Far away from a magnet, the magnetic field created by that magnet is almost always described (to a good approximation) by a dipole field characterized by its total magnetic moment. This is true regardless of the ...