Neodymium Magnets, also known as NdFeB, NIB, or Neo magnets, are the most widely-used type of rare earth magnets. It's the strongest type of permanent magnet made from an alloy of Neodymium, Iron, and Boron.
Samarium Cobalt magnets (also known as SmCo magnets) are another type of permanent magnet. A big advantage of SmCo magnets is that they can operate at temperatures up to 300 degrees Centigrade.
Ceramic magnet material is one of the most cost effective magnetic materials. It has a fair to good resistance toward corrosion and it can operate in moderate heat. They are usually used in assemblies containing mild steel.
AlNiCo Magnets Materials is comprised of aluminum, nickel, cobalt and iron with varying additions of other elements, it possesses an excellent temperature stability and high residual induction.