Ferrites are produced from compressed powder in a process called sintering and comprise iron oxides and strontium/barium carbonate.
Electrically non-conductive and non-corroding
Neodymium (NdFeB) magnets have been produced since the 1980s and comprise Neodymium, Boron and Iron.
Strongest magnet in relation to size
Alnico magnets are manufactured using casting or sintering processes and comprise approx. 8% Al, 14% Ni, 25% Co, 50% Fe.
Can withstand the highest working temperature
SmCo magnets are manufactured using a method called powder metallurgy and normally contain Sm and Co in the ratio 1:5 or 2:17.
For special applications