Uniaxial Magnetic Anisotropy Induced in Pt–Co Alloy by Tempering under Stress
Uniaxial Magnetic Anisotropy Induced in Pt–Co Alloy by Tempering under Stress
复制标题
Pt-Co合金应力回火引起的单轴磁各向异性
DOI：
10.1063/1.1656562
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发表时间：
1968
影响因子：
3.2
通讯作者：
E. Hashimoto
中科院分区：
文献类型：
--
作者：
S. Shimizu;E. Hashimoto
当50 at.% Pt-Co合金在压应力下回火，产生单轴磁各向异性，其易磁化轴沿着应力方向。当在拉伸应力而不是压缩下回火时，各向异性的难轴沿着应力方向。这种各向异性在所谓的过时效（完美有序）状态下最明显，在20 kOe的磁场中测得K=3.1×106 erg/cc。在沿着易磁化轴和难磁化轴的23 kOe磁场中分别测得4πI=7.4 kG和4.7 kG。从X射线衍射图中可以观察到一种纤维结构，其中有序的四元点阵的X 001轴取向于压应力方向，而不是横向。
When the 50 at.% Pt–Co alloy is tempered under compressive stress, a uniaxial magnetic anisotropy is induced which has its easy axis along the direction of the stress. When tempered under tensile stress instead of compression, the anisotropy has its hard axis along the direction of the stress. This anisotropy is most developed in the so‐called over‐aged (perfectly ordered) state, and K=3.1×106 erg/cc is measured in the field of 20 kOe. 4πI=7.4 kG and 4.7 kG are measured in the field of 23 kOe along the easy and the hard axis, respectively. From x‐ray‐diffraction diagrams a kind of fiber structure is observed in which the 〈001〉 axes of the ordered tetragonal lattices are oriented to the direction of the compressive stress somewhat more than the cross directions.