纳米晶交换耦合稀土永磁体α－Fe／Nd_2Fe_(14)B的居里温度及磁性能随温度变化关系研究  

CURIE TEMPERATURE AND THE TEMPERATURE DEPENDENCE OF MAGNETIC PROPERTIES STUDY OF CoGa CONTAININGNANOMETERSCALE αFe/Nd2Fe14B EXCHANGECOUPLED RAREEARTH PERMANENT MAGNETS

作　　者：杨仕清[1] 王豪才[1] 张万里[1] 王瑞芳 龚捷 

机构地区：[1]电子科技大学信息材料工程学院

出　　处：《原子与分子物理学报》1999年第1期111-115,共5页Journal of Atomic and Molecular Physics

基　　金：国防预研基金项目

摘　　要：从铁磁体材料原子中电子间静电交换相互作用出发，结合Ｈｅｉｓｅｎｂｅｒｇ铁磁性理论，从原子分子设计的角度，针对ＮｄＦｅＢ基稀土永磁材料的晶体结构及原子占位特征，提出了提高居里温度ＴＣ的三条途径，在此基础上，利用熔体快淬工艺合成了具有高ＴＣ和磁性能的高温度稳定性的纳米晶稀土永磁体材料，并对其微结构及磁性能分别进行了表征和振动样品磁强计（ＶＳＭ）的测试与讨论。ased upon the static exchange interaction and Heisenberg ferromagnetism theory, from the view point of atomic and molecular design, having considered the crystal structure and Fe atoms distribution sites of Nd2Fe14B, we put forward three ways to raise Curie temperature TC of NdFeB permanent magnets. Then, the ribbons of Nd9(Fe0.9Co0.1)84Ga1B6 alloy have been prepared by meltspun overquenching, the nanocrystalline microstructures with high Curie temperature and high temperature stability of magnetic properties were fabricated by annealing the meltspun ribbons. The microstructure and magnetic propertis measured by vibrating sample magnetometer(VSM) are reported.

关 键 词：纳米交换耦合 永磁体 居里温度 磁性能 

分 类 号：TM273.014[一般工业技术—材料科学与工程]