Magnetostriction of TbxDy0.9-xNd0.1(Fe0.8Co0.2)(1.93) compounds and their composites (0.20 <= x <= 0.60)
Magnetostriction of TbxDy0.9-xNd0.1(Fe0.8Co0.2)(1.93) compounds and their composites (0.20 <= x <= 0.60)
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DOI：
10.1016/j.jallcom.2013.08.092
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发表时间：
2014-01
影响因子：
6.2
通讯作者：
H. Yin;J. J. Liu-J.;Z. Pan;Xueyun Liu;Lehui Liu;Juan Du;P. Si
中科院分区：
文献类型：
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作者：
H. Yin;J. J. Liu-J.;Z. Pan;Xueyun Liu;Lehui Liu;Juan Du;P. Si
研究了TbxDy0.9−xNd0.1（Fe0.8Co0.2）1.93（0.20 <$x <$0.60）合金的结构、自旋组态、磁晶各向异性补偿、磁性能和磁致伸缩。随着Tb含量的增加，样品的室温易磁化方向（EMD）由<1 0 0>（x ≤ 0.25）轴向（x <1 1 1>≤ 0.30）轴旋转，受到Tb ~（3+）和Dy ~（3+）离子间的各向异性补偿。X射线衍射、EMD和磁致伸缩分析表明，TbxDy 0.9 − xNd 0.1（Fe 0.8Co 0.2）1.93是一个各向异性补偿系统，补偿点在x = 0.30附近。Laves相化合物Tb0.4Dy0.5Nd0.1（Fe0.8Co0.2）1.93具有很大的自发磁致伸缩系数λ 111，可达1640 ppm。通过无磁场固化和有磁场固化制备了环氧树脂键合的0-3和伪1-3复合材料。高磁致伸缩，纵向λ||和线性各向异性λa（=λ||在6 kOe时，晶粒取向的<1 1 1>赝1-3环氧树脂/Tb0.4Dy0.5Nd0.1（Fe0.8Co0.2）1.93复合材料中合金颗粒含量为20vol%时，复合材料的平均热膨胀系数分别为390和650 ppm。
The structure, spin configuration, magnetocrystalline anisotropy compensation, magnetic properties, and magnetostriction of TbxDy0.9−xNd0.1(Fe0.8Co0.2)1.93(0.20 ⩽x⩽ 0.60) alloys are investigated. The easy magnetization direction (EMD) at room temperature rotates from the <1 0 0> axis (x⩽ 0.25) to the <1 1 1> axis (x⩾ 0.30) with increasing Tb content, subjected to the anisotropy compensation between Tb3+and Dy3+ions. The analysis of X-ray diffraction, EMD and magnetostriction show that TbxDy0.9−xNd0.1(Fe0.8Co0.2)1.93is an anisotropy compensation system and the compensation point is realized aroundx= 0.30. The Laves phase compound Tb0.4Dy0.5Nd0.1(Fe0.8Co0.2)1.93has a large spontaneous magnetostriction, the coefficient λ111up to about 1640 ppm. The epoxy bonded 0–3 and pseudo-1–3 composites were fabricated by curing without and with a magnetic field. A high magnetostriction, longitudinalλ||and linear anisotropicλa(=λ||−λ⊥) up to around 390 and 650 ppm at 6 kOe, respectively, is obtained for the grain <1 1 1>-oriented pseudo-1–3 epoxy/Tb0.4Dy0.5Nd0.1(Fe0.8Co0.2)1.93composite with 20 vol% alloy particles.