| Sm(Co_(0.74)Cu_(0.12)Fe_(0.1)Zr_(0.04))_(7.5)纳米晶烧结磁体的结构和磁性能 |
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| 引用本文： | 杨建军,许刚,张东涛,岳明,刘卫强,张久兴.Sm(Co_(0.74)Cu_(0.12)Fe_(0.1)Zr_(0.04))_(7.5)纳米晶烧结磁体的结构和磁性能[J].功能材料与器件学报,2009,15(6). |
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| 作者姓名： | 杨建军 许刚 张东涛 岳明 刘卫强 张久兴 |
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| 作者单位： | 北京工业大学新型功能材料教育部重点实验室,北京,100124 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，北京市自然科学基金重点项目 |
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| 摘 要： | 采用放电等离子烧结技术制备了致密纳米晶SmCoCuFeZr烧结磁体,研究了磁体的结构和磁性能.X衍射结果表明,烧结磁体具有TbCu_7结构.TEM观察显示,烧结磁体平均晶粒尺寸为35nm.室温时磁体的剩磁为0.49T,矫顽力高达1.42T,而剩磁比Mr/Ms为0.63,表明在纳米晶之间存在晶间交换耦合作用.
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| 关 键 词： | 烧结磁体 |
Structure and magnetic properties of Bulk nanocrystalline Sm(Co_(0.74)Cu_(0.12)Fe_(0.1)Zr_(0.04))_(7.5) sintered magnet |
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| YANG Jian-jun,XU Gang,ZHA NG Dong-tao,YUE Ming,LIU Wei-qiang,ZHANG Jiu-xing.Structure and magnetic properties of Bulk nanocrystalline Sm(Co_(0.74)Cu_(0.12)Fe_(0.1)Zr_(0.04))_(7.5) sintered magnet[J].Journal of Functional Materials and Devices,2009,15(6). |
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| Authors: | YANG Jian-jun XU Gang ZHA NG Dong-tao YUE Ming LIU Wei-qiang ZHANG Jiu-xing |
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| Affiliation: | YANG Jian-jun,XU Gang,ZHANG Dong-tao,YUE Ming,LIU Wei-qiang,ZHANG Jiu-xing(The Key Laboratory of Advanced Functional Materials,Ministry of Education,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | Bulk nanocrystalline SmCoCuFeZr sintered magnet was prepared by Spark Plasma Sintering technique(SPS),Structure and magnetic properties of the magnet were studied.XRD patterns show that the magnet exhibits TbCu7 structure.TEM observation indicates that the average grain size of the magnet is 35nm.Magnetic measurement shows that the remanence is 0.49T and the coercivity of the magnet reaches as high as 1.42T at room temperature.The ratio of Mr/Ms is 0.63,which demonstrates the existence of intergrain exchang... |
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| Keywords: | SmCo SPS TbCu_7 SmCo SPS Sintered magnet TbCu_7 |
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