Magnetic and Magnetostrictive Properties of Tb$_x$Dy$_0.7 - x$Pr$_0.3$(Fe$_0.9$B$_0.1$)$_1.93$Compounds and Their Composites
Magnetic and Magnetostrictive Properties of Tb$_x$Dy$_0.7 - x$Pr$_0.3$(Fe$_0.9$B$_0.1$)$_1.93$Compounds and Their Composites
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DOI：
10.1109/tmag.2006.879633
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发表时间：
2006-09
影响因子：
2.1
通讯作者：
Jinjun Liu;S. Or;C. Lo;Zhidong Zhang
中科院分区：
文献类型：
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作者：
Jinjun Liu;S. Or;C. Lo;Zhidong Zhang
制备了x在0.16-0.25各向异性极小区略有变化的TbxDy0.7-xPr0.3(Fe0.9B0.1)1.93(TDPFBx)多元Laves化合物及其含有53%TDPFBx颗粒的环氧结合颗粒复合材料，研究了它们的磁性能和磁致伸缩性能随磁场的变化规律。TDPFBx=0.22的化合物和复合材料表现出除了最大的低场(a(=lambda||-lambda perp))、压磁系数d33和lambdaa/max(Lambda Alambdaamax)之外的最低的矫顽力和最快的磁化饱和速度。TDPFBx=0.22复合材料在400kA/m时的峰值为490ppm，在160kA/m时的峰值为1.4 nm/A，接近相同场强下复合值的79%和82%。TDPFBx=0.22化合物和复合材料具有较高的磁致伸缩和较低的磁各向异性，是一种很有前途的磁致伸缩材料
Tbx Dy0.7-x Pr0.3 (Fe0.9 B0.1)1.93 (TDPFBx) multicomponent Laves compounds with x slightly varying in the anisotropy minimization region of 0.16-0.25 were prepared, together with their epoxy-bonded particulate composites with 53-vol% TDPFB x particles, so as to investigate the dependence of their magnetic and magnetostrictive properties on x as a function of magnetic field. The composites showed similar qualitative trends in properties with the compounds for all x. The TDPFBx=0.22 compound and composite exhibited the fastest saturation of magnetization with the lowest coercivity besides the largest low-field (a(=lambda||-lambda perp), piezomagnetic coefficients d33, and ratios of lambdaa to maximum lambdaa (lambda alambdaamax). The TDPFBx=0.22 composite demonstrated a large lambdaa of 490 ppm at 400 kA/m and a high d33 of 1.4 nm/A at 160 kA/m. These values approached to 79% and 82% of its compound values at the same field levels. The high magnetostrictions combined with the low magnetic anisotropy could make the TDPFBx=0.22 compound and composite be promising magnetostrictive materials