Fill in the blank: Ferromagentic metals and alloys.
Strongest permanent magnets are nowadays made of Neomagnet alloy.
In these days permanent magnets are made of alloys of metals and ferromagnetic materials. Some are :
alloy of Aluminum, Nickel and Cobalt called Alnico magnets
alloy of Iron, Boron and rare earth metal Neodymium called Neodymium
magnets or neomagnets. [tex] Nd_2 Fe_{14} B [/tex]
alloy of Rare earth material Strontium and Iron.
alloy of Rare earth metal Samarium and cobalt form an alloy
These are better than magnets made from metals in terms of strength, longevity etc.
Ferromagnetic metals: Iron Fe, Cobalt Co, Nickel Ni, Ferric oxide Iron III oxide Fe₂ O₃ , Boron
Rare Earth Metals: Gadolinium Gd, Samarium Sm, Neodymium Nd, Praseodymium Pr
