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 Nd2Fe14B, we put forward three ways to raise Curie temperature TC of NdFeB permanent magnets. Then, the ribbons of Nd9(Fe0.9Co0.1)84Ga1B6 alloy have been prepared by meltspun overquenching, the nanocrystalline microstructures with high Curie temperature and high temperature stability of magnetic properties were fabricated by annealing the meltspun ribbons. The microstructure and magnetic propertis measured by vibrating sample magnetometer(VSM) are reported.
出处
《原子与分子物理学报》
CSCD
北大核心
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
关键词
纳米交换耦合
永磁体
居里温度
磁性能
: Nanometerscale exchangecoupling Permanent magnetCurie temperature Exhange integrals Magnetic propertyMeltspun overquenching
