Powders for rare earth magnets, rare earth magnets and methods for manufacturing the same

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A powder consists essentially by weight, of 28.00 & R & 32.00%, where R is at least one rare earth element including Y and the sum of Dy + Tb > 0.5, 0.50 & B & 2.00%, 0.50 & Co & 3.50%, 0.050 & M & 0.5%, where M is one or more of the elements Ga, Cu and Al, 0.25 wt%< O & 0.5%, 0.15% or less of C, balance Fe.