Microstructural, magnetic and magnetostrictive properties of Tb0.3Dy0.7Fe1.95 prepared by solidification in a high magnetic field
Microstructural, magnetic and magnetostrictive properties of Tb0.3Dy0.7Fe1.95 prepared by solidification in a high magnetic field
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DOI：
10.1088/0022-3727/46/12/125005
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发表时间：
2013-03
期刊：
影响因子：
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通讯作者：
Tie Liu;Yin Liu;Qiang Wang;K. Iwai;P. Gao;Jicheng He
中科院分区：
文献类型：
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作者：
Tie Liu;Yin Liu;Qiang Wang;K. Iwai;P. Gao;Jicheng He
研究了Tb0.3Dy0.7Fe1.95合金在强磁场中凝固组织的演变及磁化和磁致伸缩性能。产生了细胞状微观结构，其中晶粒沿着磁场的方向沿着高度排列。（Tb，Dy）Fe 2相高度取向，其轴沿着磁场方向为111 °。合金的易磁化方向沿着磁场方向分布。在室温下的磁致伸缩显着增加到没有高磁场制备的样品的两倍，此外，在低场的初始磁致伸缩急剧上升，观察。在凝固过程中施加强磁场是制备Tb-Dy-Fe系化合物的有效途径，可提高其磁性能和磁致伸缩性能。
The microstructure evolution and magnetization and magnetostriction properties of Tb0.3Dy0.7Fe1.95 alloy solidified in a high magnetic field were investigated. A cellular microstructure was produced, with the grains highly aligned along the direction of the magnetic field. The (Tb,Dy)Fe2 phase was highly oriented, with its 〈1 1 1〉 axis along the magnetic field direction. The easy magnetization direction of the alloy lay along the magnetic field direction. The magnetostriction at room temperature significantly increased to double that of the sample prepared without high magnetic field; in addition, a sharp rise in the initial magnetostriction at low fields was observed. Applying a high magnetic field during the solidification process is proposed as an effective route for fabricating 〈1 1 1〉 oriented Tb–Dy–Fe compounds, and improving their magnetic and magnetostrictive properties.