Browsing by Author "Lin, Lu-Kui"

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Magnetization Reversal Characteristics in NiFe Elliptical Ring Arrays
(2010-06-01)
Chang, Liang-Juan
;
Chen, Kuan-Yu
;
Lin, Lu-Kui
;
Yao, Yeong Der
;
Lin, Pang
The magnetization reversal processes of single-layer nanoscale elliptical ring arrays are examined. The magnetic field was applied parallel or perpendicular to the long axis. The magnetization hysteresis loops showed a simultaneous-reversal single-step transition or two-step transition involving flux closure vortex states. For various aspect ratios and thicknesses, the transition between single-step and double-step magnetization reversals was measured to form phase diagrams. Simulations of the magnetization reversal behavior agreed with our results.