中国物理B ›› 2008, Vol. 17 ›› Issue (6): 2281-2287.doi: 10.1088/1674-1056/17/6/058
李岫梅1, 方以坤1, 郭朝晖1, 刘涛1, 郭永权1, 李卫1, 韩宝善2
Li Xiu-Mei(李岫梅)a)†, Fang Yi-Kun(方以坤)a), Guo Zhao-Hui(郭朝晖)a), Liu Tao(刘涛)a), Guo Yong-Quan(郭永权)a), Li Wei(李卫)a), and Han Bao-Shan(韩宝善)b)
摘要: The typical magnetic domains of Sm(CobalFe0.25Cu0.07Zr0.02)7.4 magnets quenched through various heat-treatment steps have been revealed by using magnetic force microscopy (MFM). For the specimens in which the nominal c-axis is perpendicular to the imaging plane, the domain configurations change from plate-like for the as-sintered magnet to corrugation and spike-like for the homogenized one, and then to a coarse and finally to a finer domain structure when isothermally aged at 830\du\ and then annealed at 400\du. However, only plate-like domains can be detected on the surfaces with the nominal c-axis parallel to the imaging plane. The finer domain (so-called interaction domain) is a characteristic magnetic domain pattern of the Sm--Co 2:17-type magnets with high coercivities. Domain walls in a zigzag shape are revealed by means of MFM in final bulk Sm--Co 2:17-type sintered magnets.
中图分类号: (Domain walls and domain structure)