| 摘要 |
<p>By compacting in a magnetic field a mixture containing powder raw material A having a composition represented by (TbxDy1-x)Ty wherein T is at least one metal of Fe, Co, and Ni and 0.30 < x </= 0.50 and 1.70 </= y </= 2.00, powder raw material B having a composition represented by (Dy1-tTbt)zT1-z wherein 0 </= t </= 0.30 and 0.40 </= z </= 0.80 and optionally, powder raw material C consisting essentially of element T, and sintering the compact, there is prepared a magnetostrictive material having a composition represented by (TbvDy1-v)Tw wherein 0.27 </= v < 0.50 and 1.70 </= w </= 2.00, with grains oriented along [111] axis. The material having minimal crystalline magnetic anisotropy at room temperature and large magnetostrains is obtained at low cost by powder metallurgy. <IMAGE></p> |
