MAGNETIC-ANISOTROPY AND GIANT MAGNETOSTRICTION OF AMORPHOUS TBDYFE FILMS
MAGNETIC-ANISOTROPY AND GIANT MAGNETOSTRICTION OF AMORPHOUS TBDYFE FILMS
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DOI：
10.1063/1.357192
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发表时间：
1994-11-01
影响因子：
3.2
通讯作者：
KRONMULLER, H
中科院分区：
文献类型：
--
作者：
SCHATZ, F;HIRSCHER, M;KRONMULLER, H
研究了内应力对非晶（Tb0.27DY0.73）（0.42）Fe-0.58薄膜磁各向异性和磁致伸缩的影响。在室温下，在平行于薄膜平面的磁场中测量，具有张应力的薄膜在1 T下表现出面内各向异性和λ（平行于）= 400 × 10（-6）的巨磁致伸缩。在0.05T时，磁致伸缩迅速上升到λ（平行于）= 200 × 10（-6），磁致伸缩率小于0.01T。另一方面，具有压应力的膜显示垂直各向异性和在1 T下仍较高的磁致伸缩，λ（平行于）= 540 × 10（-6）;然而，这是迄今为止在小磁场下磁致伸缩的较慢增加。这种不同的行为是通过考虑磁化过程的性质来解释的，即，畴壁运动和自旋旋转。
The influence of internal stress on the magnetic anisotropy and the magnetostriction was investigated in sputter-deposited amorphous (Tb0.27DY0.73)(0.42)Fe-0.58 films. Films with tensile stress show in-plane anisotropy and giant magnetostriction of lambda(parallel to)=400X10(-6) at 1 T measured in a field parallel to the film plane at room temperature. The magnetostriction rises rapidly to lambda(parallel to)=200X10(-6) at 0.05 T and the coercivity is less than 0.01 T. On the other hand films with compressive stress show perpendicular anisotropy and still higher magnetostriction of lambda(parallel to)=540x10(-6) at 1 T; however, this is by far a slower increase of magnetostriction at small fields. This different behavior is explained by considering the nature of magnetization processes, i.e., domain-wall motion and spin rotation.