不同快淬速度对Nd_8Fe_(85)Mo_1B_6磁性的影响  

EFFECT OF DIFFERENT WHEEL SPEED ON MAGNETIC PROPERTIES OF Nd_8Fe_(85)Mo_1B_6

作　　者：阴津华[1] 计齐根[1] 金志强[1] 唐少龙[1] 章建荣[1] 都有为[1] 

机构地区：[1]南京大学物理系,南京210093

出　　处：《物理学报》1999年第S1期164-168,共5页Acta Physica Sinica

基　　金：国家攀登计划!( 纳米材料科学)( 批准号:NMS07)

摘　　要：通过直接快淬制备了不同淬速的Ｎｄ８Ｆｅ８５ Ｍｏ１Ｂ６ 样品．由振动样品磁强计测量的结果发现，快淬速度对样品的磁性有很大的影响．对样品进行Ｘ 射线衍射和热磁分析发现，随着淬速的增加样品中的ＴｂＣｕ７ 相增多，同时软磁相的晶粒尺寸降低，认为样品的相组成和晶粒尺寸的变化是其磁性存在差异的原因．The melt\|spun ribbons of Nd\-8Fe\-\{85\}Mo\-1B\-6 have been prepared by directly rapid quenching at different wheel speeds. From the result of vibrating sample magnetometer measurement, we found that the magnetic properties of the ribbons are dependent on the wheel speed. X\|ray diffraction and thermomagnetic analysis were also used to investigate microstructure and phase composition of the samples. The result shows that the TbCu\-7 phase increases with increasing wheel speed; at the same time, a decreased grain size of the α\|Fe phase is observed. The change of magnetic properties is due to the change of phase composition and grain size of the samples.

关 键 词：快淬速度 晶粒尺寸 磁滞回线 软磁相 居里温度 交换耦合 磁性 矫顽力 振动样品磁强计 快淬薄带 

分 类 号：TB383[一般工业技术—材料科学与工程]