| 纳米晶交换耦合稀土永磁体制备及磁性能研究 |
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| 引用本文： | 杨仕清,张万里.纳米晶交换耦合稀土永磁体制备及磁性能研究[J].应用科学学报,1999,17(4):411-415. |
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| 作者姓名： | 杨仕清 张万里 |
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| 作者单位： | 电子科技大学 |
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| 摘 要： | 利用熔体快淬工艺制备成分为Ｎｄ８．１６Ｄｙ１Ｆｅ８５．２６Ｎｂ１Ｂ４．５８合金的非晶快淬条带，对非晶条带及其随后的晶化样品进行了微结构分析与表征，利用振动样品磁强计对样品进行了磁性及其随温度变化关系的测试，探讨了晶化温度和退火时间及Ｄｙ，Ｎｂ元素的添加对纳米稀土永磁体磁性能的影响，获得了居里温度和矫顽力较高且剩磁温度系数为正的纳米交换耦合永磁体。
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| 关 键 词： | 纳米交换耦合 制备 居里温度 磁性能 稀土永磁体 |
Preparation and Magnetic Properties of Nanocrystalline Exchange-coupling Rare-earth Permanent Magnet |
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| YANG SHIQING,ZHANG WANLI,GONG JIE,PENG BIN,WANG HAOCAI.Preparation and Magnetic Properties of Nanocrystalline Exchange-coupling Rare-earth Permanent Magnet[J].Journal of Applied Sciences,1999,17(4):411-415. |
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| Authors: | YANG SHIQING ZHANG WANLI GONG JIE PENG BIN WANG HAOCAI |
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| Abstract: | The am orphous Nd8.16 Dy1Fe85.26 Nb1B4.58 ribbons have been fabricated by m eans ofm elt-spun overquenching. Microstructure investigation by XRDand TEM of the am orphousand crystalribbonsisreported.them agnetic propertiesand theirdepen- dence of tem perature were determ ined using vibrating sam ple m agnetom eter (VSM). The influence of annealing tem perature, tim e and addition ofDy, Nb on the m agnetic properties of nanostracture rare-earth perm anent m agnet has been also investigated. The nanostructure exchange-coupling perm anent m agnetw ith higher Curie tem peratue and higher coercivity and positive rem anence tem perature coefficient have been ob- tained. |
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| Keywords: | nanostructure exchange-coupling perm anent m agnet m elt-spun overqu- enching Curie tem perature m agneticproperties |
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