Magnetostriction of melt-spun Fe85Ga15, Fe78Ni7Ga15 and Fe78Co7Ga15 stacked ribbon samples
Magnetostriction of melt-spun Fe85Ga15, Fe78Ni7Ga15 and Fe78Co7Ga15 stacked ribbon samples
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DOI：
10.1016/j.jmmm.2009.06.008
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发表时间：
2010-05
影响因子：
2.7
通讯作者：
C. Bormio-Nunes;R. S. Turtelli;R. Grössinger;H. Müller;H. Sassik
中科院分区：
文献类型：
--
作者：
C. Bormio-Nunes;R. S. Turtelli;R. Grössinger;H. Müller;H. Sassik
制备了由Fe85Ga15、Fe78Ni7Ga15和Fe78Co7Ga15组成的叠层带状样品。X射线衍射谱表明，二元Fe85Ga15具有无序的A2结构，而Co和Ni的加入导致了额外的有序DO3结构的出现。X射线衍射线强度比的比较给出了垂直于带材表面的(100)织构的有力证据。光学研究的显微组织支持这些结果，因为它显示出平行于凝固方向的柱状晶生长--平行于带材厚度。Fe78Ni7Ga15的磁致伸缩最大(370ppm)，而Fe78Co7Ga15a的磁致伸缩较小，为270ppm。磁致伸缩的增强归因于这些薄带中的(100)织构。
A set of stacked ribbon samples with the compositions Fe85Ga15, Fe78Ni7Ga15and Fe78Co7Ga15were prepared. XRD on these ribbons show that the binary Fe85Ga15ribbon exhibits the disordered A2 structure whereas the addition of Co and Ni leads to the appearance of an additional ordered DO3structure. A comparison of the ratio of the XRD-line intensities gave strong evidence of a (100) texture perpendicular to the ribbon surface. The optical studied microstructure supports these results because it shows a columnar grain growth parallel to the solidification direction—which is parallel to ribbon thickness. The highest magnetostriction was found for Fe78Ni7Ga15(370ppm), while the Fe78Co7Ga15a smaller magnetostriction of 270ppm was found. The enhancement of the magnetostriction is attributed to the (100) texture in these ribbons.