| http://www.w3.org/ns/prov#value | - In the present invention, the term "salts of metals containing at least Fe or Fe--Co and being capable of forming ferromagnetic powders" designates those containing any of Fe, Co, Fe--Co, Fe--Ni, Co--Ni and Fe--Co--Ni, and optionally containing an appropriate amount of salts of rare earth elements such as La, Ce, Nd and Sm, and other elements such as Sn, Al, W, Cr, Mn, Cu, Zn, Ag, Pb, Pd and Ti fo
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