Very large intrinsic coercivities, ranging from 28-32kOe, combined with saturation inductions ranging from 11.6- 12.1kG have been obtained in bulk alloys corresponding to the compositions Sm(Co.90-vFevCu.08Zr.02)8.35with v=0.23- 0.30. We do not observe a drop in 4πMsasMHcreaches high levels nor a significant drop inMHcat high Fe contents.
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Ray et al. (1983) studied this question.
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