Structure and magnetic properties of Sm(Co{sub}(bal)Fe{sub}xTi{sub}0.05){sub}9.6 and Sm(Co{sub}(bal)Fe{sub}xTi{sub}0.05Cu{sub}0.1){sub}9.6 magnets (x=0-0.4)

摘要

The coercivities of Sm-Co 2-17 type magnets at high temperature have been significantly improved by reducing the R/3d ratio down to 7 [1,2], at the expense, however, of their high magnetic moments. In such a context, further increasing saturation magnetization without reductions in coercivities may become the next challenging goal. One of our efforts is to search for other new compounds with much high transition metal content (R/3d> 8.5) as well as high Tc and high anisotropy Ha. New potential permanent magnet materials with compositions of Sm(Co{sub}(bal)Fe{sub}xTi{sub}0.05){sub}9.6 and Sm(Co{sub}(bal)Fe{sub}0.2Ti{sub}0.05Cu{sub}0.1){sub}9.6s (x = O-4) have been synthesized and characterized in the present study.