作者: Yasushi Endo , Hideki Fujimoto , Shinya Kumano , Yusuke Matsumura , Isao Sasaki
DOI: 10.1063/1.2836681
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摘要: We have studied the details of magnetization reversal process in Ni–Fe nanowires and dots using magnetic field sweeping (MFS)-magnetic force microscopy (MFM). All points within nanowire dot show important changes phase (changes stray field) including a hysteresis loop, decrease an increase phase, as is varied. From these results, it demonstrated that domain wall motion dominates 10-nm-thick with widths between 100 1000nm. It also nucleation, movement, annihilation vortex core can be directly observed 40-nm-thick circular diameters 200 800nm. Furthermore, found that, elliptical several major axial distances adjacent dots, magnetostatically couples ...