| http://www.w3.org/ns/prov#value | - The alloy composition of the rare earth-cobalt magnets is typically expressed by the formula of RCo5 or R(Co,Cu,Fe,M)z, in which R is one or a combination of the rare earth elements, such as samarium, cerium, praseodymium, neodymium, terbium, yttrium and the like, M is one or a combination of the elements belonging to the Fourth to Seventh Groups of the Periodic Table including titanium, zirconium
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