Effect of Zr on magnetic properties and electrical resistivity of Sm(CobalFe0.09Cuo.o9Zrx)(7.68) magnets
Effect of Zr on magnetic properties and electrical resistivity of Sm(CobalFe0.09Cuo.o9Zrx)(7.68) magnets
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Zr对Sm(CobalFe0.09Cuo.o9Zrx)(7.68)磁体磁性能和电阻率的影响
DOI：
10.1016/j.jallcom.2018.04.222
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发表时间：
2018
影响因子：
6.2
通讯作者：
Yan Aru
中科院分区：
文献类型：
--
作者：
Li Tianyi;Liu Zhuang;Feng Yanping;Liu Lei;Zhang Chaoyue;Yan Guanghui;Feng Zaixin;Lee Don;Yan Aru
本文研究了Zr含量对Sm(CobalFe0.09Cu0.09Zrx)7.68（x= 0.020,0.025,0.030,0.035）高温磁体磁性能和电阻率的影响。随着Zr含量的增加，晶胞平均尺寸减小，层状结构密度增大。此外，在层状相和胞状结构之间也形成了大量的相界。随着Zr含量的增加，550 °C的矫顽力由3.21 kOe提高到6.05 kOe。电阻率随Zr含量的增加在不同方向上表现出明显不同的变化。在室温和127 ℃下，电阻率沿平行于C轴方向分别从68.2 μΩ cm提高到91.7 μΩ cm和从87.1 μΩ cm提高到103.3 μΩ cm，从0.020增加到0.035。然而，在垂直于c轴的方向上，电阻率只有轻微的增加。讨论了电阻率在不同方向上的上升。研究结果表明，提高片层相密度是提高2:17型Sm-Co磁体电阻率的有效途径。
In this work, the effect of Zr content on magnetic properties and electrical resistivity of Sm(CobalFe0.09Cu0.09Zrx)7.68(x= 0.020, 0.025, 0.030, 0.035) high temperature magnets has been investigated. More Zr content results in the decrease of average cell size and the increase of the density of lamellar structure. In addition, a large number of phase boundaries between lamellar phase and cellular structure have also been formed. The intrinsic coercivity of 550 °C enhances from 3.21 kOe to 6.05 kOe with the increase of Zr content. Furthermore, electrical resistivity shows obviously different variation in different directions with increasing Zr content. At room temperature and 127 °C, the electrical resistivity improves from 68.2 μΩ cm to 91.7 μΩ cm and from 87.1 μΩ cm to 103.3 μΩ cm with increasingxfrom 0.020 to 0.035 in the direction parallel toc-axis, respectively. However, there is only a slight increase in the electrical resistivity in the direction perpendicular toc-axis. The rise of electrical resistivity in different directions has been discussed. Research results indicate that increasing the density of the lamellar phase is an effective way to increase electrical resistivity in the 2:17-type Sm-Co magnets.